1
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Hu J, Yun X, Zheng Y, Sun T, Song L, Pan P, Dong T. Development of ultra-thin poly(L-lactic acid)-based films integrating toughness, barrier properties, and gas selectivity: Towards gas-permeation controllable green food packaging. Food Chem 2024; 449:139218. [PMID: 38579656 DOI: 10.1016/j.foodchem.2024.139218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 03/19/2024] [Accepted: 03/31/2024] [Indexed: 04/07/2024]
Abstract
High costs and low performance have constrained the application of bio-based materials in food packaging. Herein, a series of ultra-thin poly(L-lactic acid-iconic acid N-diol) (P(LA-NI)) copolymer films were developed using a "one-step" polycondensation process with integrated toughness, barrier properties, gas selectivity, and quality control features. The massive branched structure and gg conformers in P(LA-NI) act as "internal chain expansion" and "internal plasticization". Meanwhile, P(LA-NI) contains numerous polar groups and unique nanoscale microphase structures to realize excellent CO2, O2 barrier, CO2/O2 selectivity, anti-fogging, and UV shielding functions. The atmosphere within the package spontaneously achieves the desirable low O2 and high CO2 levels when packaging button mushrooms with high respiratory metabolism. Eventually, the shelf life of button mushrooms reached 24 days, >3-fold extended. This PLLA-based film meets "dual carbon" and "food safety" goals and has vast potential for fresh food preservation.
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Affiliation(s)
- Jian Hu
- College of Food Science and Engineering, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Hohhot, Inner Mongolia 010018, China
| | - Xueyan Yun
- College of Food Science and Engineering, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Hohhot, Inner Mongolia 010018, China
| | - Yan Zheng
- College of Food Science and Engineering, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Hohhot, Inner Mongolia 010018, China
| | - Tao Sun
- College of Food Science and Engineering, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Hohhot, Inner Mongolia 010018, China
| | - Lijun Song
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen 361021, China
| | - Pengju Pan
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
| | - Tungalag Dong
- College of Food Science and Engineering, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Hohhot, Inner Mongolia 010018, China.
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2
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Liao Y, Lan Q. Understanding the Impact of Chain Mobility on Conformational Evolution and Kinetics of Mesophase Formation in Poly(ʟ-lactide) under Low-Pressure CO 2. Polymers (Basel) 2024; 16:1378. [PMID: 38794571 PMCID: PMC11124961 DOI: 10.3390/polym16101378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 05/03/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
Although the mesomorphic phase as an intermediate state has been introduced to understand polymer crystallization, the understanding of the mesomorphic phase is far from complete. Here, the effect of chain mobility on the mesophase structuring in melt-quenched poly(ʟ-lactide) (PLLA) treated in low-pressure CO2 at 1.6-2.0 MPa and 0 °C was investigated using infrared (IR) spectroscopy, differential scanning calorimetry (DSC), and atomic force microscopy (AFM). The IR and AFM results demonstrated that the final degree of order and the kinetics of structural evolution during the CO2-induced mesophase formation were critically dependent on the CO2 pressure. This was attributed to the distinct dynamics of conformational evolution (gg to gt conformer transition) due to the different CO2 pressures. The thermal behavior from the DSC results showed that CO2 pressure dominated both the scale and dynamics of the chain motion of PLLA. At a lower CO2 pressure of 1.6 MPa, smaller-scale segmental motion was not replaced by the larger-scale cooperative motion that occurred at a relatively higher CO2 pressure of 2 MPa, which was favorable for faster mesophase formation. Consequently, by inhibiting direct crystallization under limited mobility conditions, it was demonstrated that different chain mobility controlled by CO2 pressure and thus CO2 solubility impacted the dynamics of the mesophase formation of PLLA. The present results have implications for understanding the role of chain mobility in determining the intermediate structural phases in semicrystalline polymers.
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Affiliation(s)
| | - Qiaofeng Lan
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China;
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3
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Lee BG, Lee SH, Do V, Lee JW, Choi SH, Kim W, Cho WI. Co-synthesis and Electrochemical Investigation of the Nitrogen-Doped Carbon Layer with Metallic Nano Beads on the SiO x Anode for Lithium Secondary Batteries. ACS APPLIED MATERIALS & INTERFACES 2024; 16:10042-10051. [PMID: 38353020 DOI: 10.1021/acsami.3c16105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/01/2024]
Abstract
The high theoretical capacity (∼2000 mAh g-1) of silicon suboxide (SiOx, with 1 < x < 2) can solve the energy density issue of the graphite anode in Li-ion batteries. In addition, it has an advantage in terms of volume expansion or side reactions compared to pure Si or Li metals, which are considered as next-generation anode materials. However, the loading content of SiOx is limited in commercial anodes because of its low cycle stability and initial coulombic efficiency. In this study, a nitrogen-doped carbon layer with Cu beads (N-C/Cu) derived from copper phthalocyanine (CuPc) is applied to a SiOx electrode to improve its electrochemical performance. The SiOx electrode is simultaneously coated with a Cu- and N-doped carbon layer using CuPc. N-C/Cu synergistically enhances the electric conductivity of the electrode, thus improving its electrochemical performance. The SiOx/N-C/Cu composite has better cyclability and higher capacity (1095.5 mAh g-1) than the uncoated electrode, even after 200 cycles in the 0.5 C condition. In full-cell cycling with NCM811 cathodes, the SiOx (60 wt % of SiOx, with a n/p ratio of 1.1) and graphite-mixed (7.8 wt % of SiOx, with a n/p ratio of 1.1) anodes also show improved electrochemical performances in the same conditions.
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Affiliation(s)
- Byeong Gwon Lee
- Center for Energy Storage Research, Korea Institute of Science and Technology (KIST), 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
- Department of Materials Science and Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Seung Hun Lee
- Center for Energy Storage Research, Korea Institute of Science and Technology (KIST), 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
- Department of Materials Science and Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Vandung Do
- Center for Energy Storage Research, Korea Institute of Science and Technology (KIST), 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Jae Woo Lee
- Posco Silicon Solution, Nojanggongdan-gil, Jeondong-myeon, Sejong 30011, Republic of Korea
| | - Sun Ho Choi
- Posco Silicon Solution, Nojanggongdan-gil, Jeondong-myeon, Sejong 30011, Republic of Korea
| | - Woong Kim
- Department of Materials Science and Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Won Il Cho
- Center for Energy Storage Research, Korea Institute of Science and Technology (KIST), 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
- Department of Materials Science and Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
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4
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Hu J, Liu B, Sun T, Zhang J, Yun X, Dong T. Towards ductile and high barrier poly(L-lactic acid) ultra-thin packaging film by regulating chain structures for efficient preservation of cherry tomatoes. Int J Biol Macromol 2023; 251:126335. [PMID: 37582432 DOI: 10.1016/j.ijbiomac.2023.126335] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/16/2023] [Accepted: 08/12/2023] [Indexed: 08/17/2023]
Abstract
The irreconcilable paradox between barrier performance and ductility is a "stumbling block" restricting the development of poly(L-lactic acid) (PLLA) films in the packaging industry. In this work, we reported the fabrication of an ultra-thin PLLA-based film with barrier properties and ductility by adjusting the polarity and conformational behavior of the polymer chains. Firstly, a novel unsaturated poly(L-lactic acid-co-butyrate itaconate) P(LA-BI) copolymer containing CC double bonds was synthesized using melt polycondensation. The results reveal that the addition of 60 % of P(LA-BI) enables PLLA film to achieve an elongation at a break of 83.6 % due to P(LA-BI) containing partially branched structures, which resulted in the polymer chains being arranged more in a high-energy gg conformer. Meanwhile, because of the large number of CO polar groups in P(LA-BI), PLLA/P(LA-BI)60 film show CO2 and O2 permeability coefficients (CDP and OP) of 1.8 and 0.45 × 10-8 g·m·m-2·h-1·Pa-1 respectively, which means that it has excellent gas barrier properties. Moreover, PLLA/P(LA-BI)60 film shows a 33.3 % increase in CO2/O2 ratio and an excellent ultraviolet (UV) barrier performance compared to neat PLLA. Preservation results suggested that the CO2 and O2 levels within the package could be regulated by varying the amount of P(LA-BI) added. Among them, PLLA/P(LA-BI)40 film generated a more desirable CO2 and O2 atmosphere for cherry tomatoes preservation, which was reflected by the delaying of senescence, discoloration, and decay, inhibition of oxidative cell damage through reduced malondialdehyde production, and maintenance of nutritional and flavor substances in cherry tomatoes. This PLLA-based film offers the advantages of operational simplicity, environmental friendliness, and inexpensive cost, making it great promising for food preservation and other applications requiring barrier properties and ductility.
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Affiliation(s)
- Jian Hu
- College of Food Science and Engineering, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Hohhot, Inner Mongolia 010018, China
| | - Bo Liu
- College of Food Science and Engineering, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Hohhot, Inner Mongolia 010018, China
| | - Tao Sun
- College of Food Science and Engineering, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Hohhot, Inner Mongolia 010018, China
| | - Jiatao Zhang
- College of Food Science and Engineering, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Hohhot, Inner Mongolia 010018, China
| | - Xueyan Yun
- College of Food Science and Engineering, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Hohhot, Inner Mongolia 010018, China
| | - Tungalag Dong
- College of Food Science and Engineering, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Hohhot, Inner Mongolia 010018, China.
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5
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Hu J, Dong T, Bu H, Sun T, Zhang J, Xu C, Yun X. Construction of gas permeable channel in poly(l-lactic acid) membrane and its control of the micro atmosphere in okra packaging. Int J Biol Macromol 2022; 219:519-529. [DOI: 10.1016/j.ijbiomac.2022.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/31/2022] [Accepted: 08/02/2022] [Indexed: 11/05/2022]
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6
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Xu S, Sun C, Yuan W, Zhou J, Xu W, Zheng Y, Yu C, Pan P. Evolution of thermal behavior, mechanical properties, and microstructure in stereocomplexable poly(lactic acid) during physical ageing. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Mirzahossein E, Grzelka M, Pan Z, Demirkurt B, Habibi M, Brouwer AM, Bonn D. Molecular rotors to probe the local viscosity of a polymer glass. J Chem Phys 2022; 156:174901. [DOI: 10.1063/5.0087572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We investigate the local viscosity of a polymer glass around its glass transition temperature using environment-sensitive fluorescent molecular rotors embedded in the polymer matrix. The rotors' fluorescence depends on the local viscosity, and measuring the fluorescence intensity and lifetime of the probe therefore allows to measure the local free volume in the polymer glass when going through the glass transition. This also allows us to study the local viscosity and free volume when the polymer film is put under an external stress. We find that the film does not flow homogeneously, but undergoes shear banding that is visible as a spatially varying free volume and viscosity.
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Affiliation(s)
| | - Marion Grzelka
- University of Amsterdam Van der Waals-Zeeman Institute, Netherlands
| | - Zhongcheng Pan
- Institute of Physics, University of Amsterdam Van der Waals-Zeeman Institute, Netherlands
| | - Begüm Demirkurt
- University of Amsterdam Van 't Hoff Institute for Molecular Sciences, Netherlands
| | - Mehdi Habibi
- Laboratory of Physical Chemistry of Foods, Wageningen University, 6708WG Wageningen, Netherlands
| | - Albert M Brouwer
- University of Amsterdam Van 't Hoff Institute for Molecular Sciences, Netherlands
| | - Daniel Bonn
- Institute of Physics, University of Amsterdam, Netherlands
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8
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Sun DX, Gu T, Mao YT, Huang CH, Qi XD, Yang JH, Wang Y. Fabricating High-Thermal-Conductivity, High-Strength, and High-Toughness Polylactic Acid-Based Blend Composites via Constructing Multioriented Microstructures. Biomacromolecules 2022; 23:1789-1802. [PMID: 35344361 DOI: 10.1021/acs.biomac.2c00067] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The massive accumulation of plastic waste has caused a serious negative impact on the human living environment. Replacing traditional petroleum-based polymers with biobased and biodegradable poly(l-lactic acid) (PLLA) is considered an effective way to solve this problem. However, it is still a great challenge to manufacture PLLA-based composites with high thermal conductivity and excellent mechanical properties via tailoring the microstructures of the blend composites. In the present work, a melt extrusion-stretching method is utilized to fabricate biodegradable PLLA/poly(butylene adipate-co-butylene terephthalate)/carbon nanofiber (PLLA/PBAT/CNF) blend composites. It is found that the incorporation of the extensional flow field induces the formation of multioriented microstructures in the composites, including the oriented PLLA molecular chains, elongated PBAT dispersed phase, and oriented CNFs, which synergistically improve the thermal conductivity and mechanical properties of the blend composites. At a CNF content of 10 wt %, the in-plane thermal conductivity, tensile strength, and elongation at break of the blend composite reach 1.53 Wm-1 K-1, 66.8 MPa, and 56.5%, respectively, which increased by 31.9, 73.5, and 874.1% compared with those of the conventionally hot-compressed sample (1.16 Wm-1 K-1, 38.5 MPa, and 5.8%, respectively). The main mechanism for the improved thermal conductivity is that the multioriented structure promotes the formation of a CNF thermal conductive network in the composites. The strengthening mechanism is attributed to the orientation of both PLLA molecular chains and CNFs in the stretching direction, restricting the movement of PLLA molecular segments around CNFs, and the toughening mechanism is due to the transformation of PLLA molecular chains from low-energy gt conformers to high-energy gg conformers induced by extensional flow field. More interestingly, after the extrusion-stretched samples are annealed, the oriented PLLA molecular chains form oriented crystal structures such as extended-chain lamellae, common "Shish-kebabs," and hybrid Shish-kebabs, which further enhance the thermal conductivity and heat resistance of the samples. This work reveals the effects of the orientation of the matrix molecular chains and crystallites on the thermal conductivity and mechanical properties of composites and provides a new way to prepare high-performance PLLA-based composites with high thermal conductivity, excellent mechanical properties, and high heat resistance.
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Affiliation(s)
- De-Xiang Sun
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Ting Gu
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Yu-Tong Mao
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Chen-Hui Huang
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Xiao-Dong Qi
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Jing-Hui Yang
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Yong Wang
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China
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9
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Infrared bands to distinguish amorphous, meso and crystalline phases of poly(lactide)s: Crystallization and phase transition pathways of amorphous, meso and co-crystal phases of poly(ʟ-lactide) in the heating process. POLYMER 2022. [DOI: 10.1016/j.polymer.2021.124495] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Stereocomplex formation and hierarchical structural changes during heating of supramolecular gels obtained by polylactide racemic blends. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Wang J, Bao J, Zhou J, Li X, Zhang X, Chen W. Effects of physical aging on the self‐healing, shape memory, and crystallization behaviors of hydrogen‐bonded supramolecular polymers. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jiantao Wang
- School of Materials Science and Engineering Zhejiang Sci‐Tech University Hangzhou China
| | - Jianna Bao
- School of Materials Science and Engineering Zhejiang Sci‐Tech University Hangzhou China
| | - Jiale Zhou
- School of Materials Science and Engineering Zhejiang Sci‐Tech University Hangzhou China
| | - Xiang Li
- School of Materials Science and Engineering Zhejiang Sci‐Tech University Hangzhou China
| | - Xianming Zhang
- School of Materials Science and Engineering Zhejiang Sci‐Tech University Hangzhou China
| | - Wenxing Chen
- School of Materials Science and Engineering Zhejiang Sci‐Tech University Hangzhou China
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12
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Huang ZX, Wang MM, Feng YH, Qu JP. Supertough, Ultrastrong, and Transparent Poly(lactic acid) via Directly Hot Pressing under Cyclic Compressing–Releasing. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00530] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhao-Xia Huang
- National Engineering Research Center of Novel Equipment for Polymer Processing; Key Laboratory of Polymer Processing Engineering, Ministry of Education; Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing; School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, China
| | - Meng-Meng Wang
- National Engineering Research Center of Novel Equipment for Polymer Processing; Key Laboratory of Polymer Processing Engineering, Ministry of Education; Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing; School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, China
| | - Yan-Hong Feng
- National Engineering Research Center of Novel Equipment for Polymer Processing; Key Laboratory of Polymer Processing Engineering, Ministry of Education; Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing; School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, China
| | - Jin-Ping Qu
- National Engineering Research Center of Novel Equipment for Polymer Processing; Key Laboratory of Polymer Processing Engineering, Ministry of Education; Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing; School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, China
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13
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Svyntkivska M, Makowski T, Piorkowska E, Brzezinski M, Herc A, Kowalewska A. Modification of Polylactide Nonwovens with Carbon Nanotubes and Ladder Poly(silsesquioxane). Molecules 2021; 26:1353. [PMID: 33802604 PMCID: PMC7961909 DOI: 10.3390/molecules26051353] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/21/2021] [Accepted: 02/21/2021] [Indexed: 11/17/2022] Open
Abstract
Electrospun nonwovens of poly(L-lactide) (PLLA) modified with multiwall carbon nanotubes (MWCNT) and linear ladder-like poly(silsesquioxane) with methoxycarbonyl side groups (LPSQ-COOMe) were obtained. MWCNT and LPSQ-COOMe were added to the polymer solution before the electrospinning. In addition, nonwovens of PLLA grafted to modified MWCNT were electrospun. All modified nonwovens exhibited higher tensile strength than the neat PLA nonwoven. The addition of 10 wt.% of LPSQ-COOMe and 0.1 wt.% of MWCNT to PLLA increased the tensile strength of the nonwovens 2.4 times, improving also the elongation at the maximum stress.
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Affiliation(s)
| | - Tomasz Makowski
- Centre of Molecular and Macromolecular Studies Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland; (M.S.); (E.P.); (M.B.); (A.H.); (A.K.)
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14
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Synergistic effect of plasticizer and nucleating agent on crystallization behavior of polylactide during fused filament fabrication. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123426] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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15
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Impacts of cellulose nanofibril and physical aging on the enthalpy relaxation behavior and dynamic mechanical thermal properties of Poly(lactic acid) composite films. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122677] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Shahnooshi M, Javadi A, Nazockdast H, Altstädt V. Development of in situ nanofibrillar poly (lactic acid)/poly (butylene terephthalate) composites: Non-isothermal crystallization and crystal morphology. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109489] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Haim Zada M, Kumar A, Elmalak O, Mechrez G, Domb AJ. Effect of Ethylene Oxide and Gamma (γ-) Sterilization on the Properties of a PLCL Polymer Material in Balloon Implants. ACS OMEGA 2019; 4:21319-21326. [PMID: 31867526 PMCID: PMC6921626 DOI: 10.1021/acsomega.9b02889] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 11/19/2019] [Indexed: 06/10/2023]
Abstract
Poly-l-lactide-co-ε-caprolactone (PLCL) is a unique polymer containing both polylactic acid and poly-ε-caprolactone (PCL) chain units, and thus it has better flexible and biodegradable properties. Based on these unique properties of PLCL, we have developed balloons that are now widely used in treating major medical problems [Biomaterials 2016, 105, 109-116]. One of the most important considerations needed for balloons is to ensure that the material properties remain similar after undergoing ethylene oxide (EtO) or gamma (γ-) sterilization treatments. From the biotechnological point of view, we focused on analyzing the vital molecular properties of the PLCL material after sterilization, such as changes in crystallinity, molecular weight distributions (M w, M n, and polydispersity index), and inherent viscosity (η). Analysis of the data reveals that EtO sterilization does not engender any change in crystallinity, melting temperature (T m), molecular weights, and η of the polymer. On the contrary, γ-radiations induce chain scission and consequential decrease of ∼33 and ∼15% in molecular weights and η values, respectively. Based on our observations, we recommend EtO sterilization instead of γ-radiation for PLCL. This ensures prolonged stability of the polymer against degradation in a biological environment, long-shelf life, and absolute assurance that balloon failures do not occur after implantation.
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Affiliation(s)
- Moran Haim Zada
- Institute
of Drug Research, Alex Grass Center for Drug Design and Novel Therapeutics,
School of Pharmacy-Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Awanish Kumar
- Institute
of Drug Research, Alex Grass Center for Drug Design and Novel Therapeutics,
School of Pharmacy-Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Omar Elmalak
- Institute
of Drug Research, Alex Grass Center for Drug Design and Novel Therapeutics,
School of Pharmacy-Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Guy Mechrez
- Department
of Food Quality and Safety, Institute for Postharvest and Food Sciences,
Volcani Center, ARO, 68 HaMaccabim Road, Rishon
LeZion 7505101, Israel
| | - Abraham J. Domb
- Institute
of Drug Research, Alex Grass Center for Drug Design and Novel Therapeutics,
School of Pharmacy-Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
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18
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Grigoriadi K, Westrik JBHM, Vogiatzis GG, van Breemen LCA, Anderson PD, Hütter M. Physical Ageing of Polystyrene: Does Tacticity Play a Role? Macromolecules 2019; 52:5948-5954. [PMID: 31423026 PMCID: PMC6694410 DOI: 10.1021/acs.macromol.9b01042] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/02/2019] [Indexed: 11/28/2022]
Abstract
The ageing kinetics of amorphous atactic (a-PS), isotactic (i-PS), and syndiotactic (s-PS) polystyrene were studied by means of flash-differential scanning calorimetry. The specimens were aged for up to 2 h at six different ageing temperatures: the optimum ageing temperature, that is, the temperature at which the enthalpy overshoot at the glass transition is maximal for the given elapsed time, and five ageing temperatures ranging from 20 to 80 K below the optimum ageing temperature. A logarithmic increase of the enthalpy overshoot with ageing time is observed for specimens at their optimum ageing temperatures. For temperatures significantly lower than the optimum, there is a range where the enthalpy overshoot is constant, but for higher temperatures (still below the optimum), a logarithmic increase is also observed. Moreover, the ageing kinetics appear to depend on tacticity, with s-PS and i-PS exhibiting the slowest and fastest ageing kinetics, respectively, and a-PS exhibiting ageing kinetics between these two extremes.
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Affiliation(s)
- Kalouda Grigoriadi
- Polymer Technology, Department of Mechanical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.,Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Jeroen B H M Westrik
- Polymer Technology, Department of Mechanical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Georgios G Vogiatzis
- Polymer Technology, Department of Mechanical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.,Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Lambèrt C A van Breemen
- Polymer Technology, Department of Mechanical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Patrick D Anderson
- Polymer Technology, Department of Mechanical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Markus Hütter
- Polymer Technology, Department of Mechanical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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19
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Gao XR, Li Y, Huang HD, Xu JZ, Xu L, Ji X, Zhong GJ, Li ZM. Extensional Stress-Induced Orientation and Crystallization can Regulate the Balance of Toughness and Stiffness of Polylactide Films: Interplay of Oriented Amorphous Chains and Crystallites. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00932] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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20
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Xu R, Tian Z, Xie J, Lei C. The structure transformation of pre‐oriented polylactic acid film during uniaxial stretching at room temperature. POLYMER CRYSTALLIZATION 2019. [DOI: 10.1002/pcr2.10072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rui‐Jie Xu
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangdong Provincial Engineering Laboratory of Energy Storage Materials and Devices, School of Materials and EnergyGuangdong University of Technology Guangzhou People's Republic of China
| | - Zi‐Qin Tian
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangdong Provincial Engineering Laboratory of Energy Storage Materials and Devices, School of Materials and EnergyGuangdong University of Technology Guangzhou People's Republic of China
| | - Jia‐Yi Xie
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangdong Provincial Engineering Laboratory of Energy Storage Materials and Devices, School of Materials and EnergyGuangdong University of Technology Guangzhou People's Republic of China
| | - Cai‐Hong Lei
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangdong Provincial Engineering Laboratory of Energy Storage Materials and Devices, School of Materials and EnergyGuangdong University of Technology Guangzhou People's Republic of China
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21
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Baran A, Vrábel P, Olčák D, Chodák I. Solid state13C-NMR study of a plasticized PLA/PHB polymer blend. J Appl Polym Sci 2018. [DOI: 10.1002/app.46296] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Anton Baran
- Department of Physics, Faculty of Electrical Engineering and Informatics; Technical University of Košice, Park Komenského 2; Košice 042 00 Slovakia
| | - Peter Vrábel
- Department of Physics, Faculty of Electrical Engineering and Informatics; Technical University of Košice, Park Komenského 2; Košice 042 00 Slovakia
| | - Dušan Olčák
- Department of Physics, Faculty of Electrical Engineering and Informatics; Technical University of Košice, Park Komenského 2; Košice 042 00 Slovakia
| | - Ivan Chodák
- Polymer Institute, Slovak Academy of Sciences, Dúbravská Cesta 9; Bratislava 845 41 Slovakia
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22
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23
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Hakim RH, Cailloux J, Santana OO, Bou J, Sánchez-Soto M, Odent J, Raquez JM, Dubois P, Carrasco F, Maspoch ML. PLA/SiO2
composites: Influence of the filler modifications on the morphology, crystallization behavior, and mechanical properties. J Appl Polym Sci 2017. [DOI: 10.1002/app.45367] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- R. H. Hakim
- Centre Català del Plàstic (CCP), Universitat Politécnica de Catalunya Barcelona Tech (EEBE-UPC); Terrassa 08222 Spain
| | - J. Cailloux
- Centre Català del Plàstic (CCP), Universitat Politécnica de Catalunya Barcelona Tech (EEBE-UPC); Terrassa 08222 Spain
| | - O. O. Santana
- Centre Català del Plàstic (CCP), Universitat Politécnica de Catalunya Barcelona Tech (EEBE-UPC); Terrassa 08222 Spain
| | - J. Bou
- Department of Chemical Engineering; Universitat Politécnica de Catalunya Barcelona Tech (ETSEIB-UPC), Pavellò G, planta 1; Barcelona 08028 Spain
| | - M. Sánchez-Soto
- Centre Català del Plàstic (CCP), Universitat Politécnica de Catalunya Barcelona Tech (EEBE-UPC); Terrassa 08222 Spain
| | - J. Odent
- Laboratory of Polymeric and Composite Materials; Center of Innovation and Research in Materials & Polymers (CIRMAP), University of Mons UMONS; Mons B-7000 Belgium
| | - J. M. Raquez
- Laboratory of Polymeric and Composite Materials; Center of Innovation and Research in Materials & Polymers (CIRMAP), University of Mons UMONS; Mons B-7000 Belgium
| | - P. Dubois
- Laboratory of Polymeric and Composite Materials; Center of Innovation and Research in Materials & Polymers (CIRMAP), University of Mons UMONS; Mons B-7000 Belgium
| | - F. Carrasco
- Department of Chemical Engineering, Agriculture and Food Technology; Universitat de Girona (UdG); Girona 17071 Spain
| | - M. Ll. Maspoch
- Centre Català del Plàstic (CCP), Universitat Politécnica de Catalunya Barcelona Tech (EEBE-UPC); Terrassa 08222 Spain
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24
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Huang T, Yamaguchi M. Effect of cooling conditions on the mechanical properties of crystalline poly(lactic acid). J Appl Polym Sci 2017. [DOI: 10.1002/app.44960] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Tong Huang
- School of Materials Science; Japan Advanced Institute of Science and Technology; 1-1 Asahidai Nomi Ishikawa 923-1292 Japan
| | - Masayuki Yamaguchi
- School of Materials Science; Japan Advanced Institute of Science and Technology; 1-1 Asahidai Nomi Ishikawa 923-1292 Japan
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25
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Yang J, Cao X, Zhao Y, Wang L, Liu B, Jia J, Liang H, Chen M. Enhanced pH stability, cell viability and reduced degradation rate of poly(L-lactide)-based composite in vitro: effect of modified magnesium oxide nanoparticles. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 28:486-503. [DOI: 10.1080/09205063.2017.1279534] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Jinjun Yang
- School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, China
- School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin, China
| | - Xiuxiang Cao
- School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, China
| | - Yun Zhao
- School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, China
- Tianjin Key Lab for Photoelectric Materials & Devices, Tianjin, China
| | - Liang Wang
- Tianjin Key Lab for Photoelectric Materials & Devices, Tianjin, China
| | - Bei Liu
- School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, China
| | - Junping Jia
- School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, China
| | - Hui Liang
- School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, China
| | - Minfang Chen
- School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, China
- Tianjin Key Lab for Photoelectric Materials & Devices, Tianjin, China
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26
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Amorphous Fractions of Poly(lactic acid). SYNTHESIS, STRUCTURE AND PROPERTIES OF POLY(LACTIC ACID) 2017. [DOI: 10.1007/12_2016_14] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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27
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Koval'aková M, Olčák D, Hronský V, Vrábel P, Fričová O, Chodák I, Alexy P, Sučik G. Morphology and molecular mobility of plasticized polylactic acid studied using solid-state13C- and1H-NMR spectroscopy. J Appl Polym Sci 2016. [DOI: 10.1002/app.43517] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mária Koval'aková
- Department of Physics; Faculty of Electrical Engineering and Informatics, Technical University of Košice; Park Komenského 2 042 00 Košice Slovakia
| | - Dušan Olčák
- Department of Physics; Faculty of Electrical Engineering and Informatics, Technical University of Košice; Park Komenského 2 042 00 Košice Slovakia
| | - Viktor Hronský
- Department of Physics; Faculty of Electrical Engineering and Informatics, Technical University of Košice; Park Komenského 2 042 00 Košice Slovakia
| | - Peter Vrábel
- Department of Physics; Faculty of Electrical Engineering and Informatics, Technical University of Košice; Park Komenského 2 042 00 Košice Slovakia
| | - Oľga Fričová
- Department of Physics; Faculty of Electrical Engineering and Informatics, Technical University of Košice; Park Komenského 2 042 00 Košice Slovakia
| | - Ivan Chodák
- Polymer Institute; Slovak Academy of Sciences; Dúbravská cesta 9 845 41 Bratislava Slovakia
| | - Pavel Alexy
- Institute of Natural and Synthetic Polymers; Slovak University of Technology; Radlinského 9 812 37 Bratislava Slovakia
| | - Gabriel Sučik
- Department of Ceramics; Faculty of Metallurgy, Technical University of Košice; Park Komenského 19 042 00 Košice Slovakia
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28
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Properties and structure of polylactide/poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PLA/PHBV) blend fibers. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.05.024] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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29
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Huang T, Miura M, Nobukawa S, Yamaguchi M. Chain Packing and Its Anomalous Effect on Mechanical Toughness for Poly(lactic acid). Biomacromolecules 2015; 16:1660-6. [DOI: 10.1021/acs.biomac.5b00293] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tong Huang
- School of Materials Science, Japan Advanced Institute of Science and Technology 1-1 Asahidai, Nomi, Ishikawa 923-1292 Japan
| | - Motohiro Miura
- School of Materials Science, Japan Advanced Institute of Science and Technology 1-1 Asahidai, Nomi, Ishikawa 923-1292 Japan
| | - Shogo Nobukawa
- School of Materials Science, Japan Advanced Institute of Science and Technology 1-1 Asahidai, Nomi, Ishikawa 923-1292 Japan
| | - Masayuki Yamaguchi
- School of Materials Science, Japan Advanced Institute of Science and Technology 1-1 Asahidai, Nomi, Ishikawa 923-1292 Japan
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30
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Huang W, Luo XZ, Wang BJ, Wei WF, Chen P, Gu Q, de Vos S, Wang RY, Joziasse CAP. Nanostructures of Stereocomplex Polylactide in Poly(l-lactide) Doped with Poly(d-lactide). MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500050] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wei Huang
- Ningbo Key Laboratory of Polymer Materials; Key Laboratory of Marine Materials and Related Technologies; Zhejiang Key Laboratory of Marine Materials and Protective Technologies; Ningbo Institute of Materials Technology and Engineering CAS; Ningbo 315201 P.R. China
- Department of Polymer Engineering and Science; School of Material Science and Chemical Engineering; Ningbo University; Ningbo 315211 P.R. China
| | - Xian-Zi Luo
- Ningbo Key Laboratory of Polymer Materials; Key Laboratory of Marine Materials and Related Technologies; Zhejiang Key Laboratory of Marine Materials and Protective Technologies; Ningbo Institute of Materials Technology and Engineering CAS; Ningbo 315201 P.R. China
| | - Bing-Jie Wang
- Ningbo Key Laboratory of Polymer Materials; Key Laboratory of Marine Materials and Related Technologies; Zhejiang Key Laboratory of Marine Materials and Protective Technologies; Ningbo Institute of Materials Technology and Engineering CAS; Ningbo 315201 P.R. China
| | - Wen-Feng Wei
- Ningbo Key Laboratory of Polymer Materials; Key Laboratory of Marine Materials and Related Technologies; Zhejiang Key Laboratory of Marine Materials and Protective Technologies; Ningbo Institute of Materials Technology and Engineering CAS; Ningbo 315201 P.R. China
| | - Peng Chen
- Ningbo Key Laboratory of Polymer Materials; Key Laboratory of Marine Materials and Related Technologies; Zhejiang Key Laboratory of Marine Materials and Protective Technologies; Ningbo Institute of Materials Technology and Engineering CAS; Ningbo 315201 P.R. China
| | - Qun Gu
- Ningbo Key Laboratory of Polymer Materials; Key Laboratory of Marine Materials and Related Technologies; Zhejiang Key Laboratory of Marine Materials and Protective Technologies; Ningbo Institute of Materials Technology and Engineering CAS; Ningbo 315201 P.R. China
| | - Sicco de Vos
- Corbion Purac; P.O. Box 21 4200AA Gorinchem The Netherlands
| | - Ru-Yin Wang
- Corbion Purac China; Unit 08-09, 30F, No. 6088 Humin Road Minhang District Shanghai 201100 P.R. China
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31
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Formation of Poly(L-lactide) mesophase and its chain mobility dependent kinetics. CHINESE JOURNAL OF POLYMER SCIENCE 2014. [DOI: 10.1007/s10118-014-1505-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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Dobircau L, Delpouve N, Herbinet R, Domenek S, Le Pluart L, Delbreilh L, Ducruet V, Dargent E. Molecular mobility and physical ageing of plasticized poly(lactide). POLYM ENG SCI 2014. [DOI: 10.1002/pen.23952] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Larisa Dobircau
- AMME-LECAP EA4528 International Laboratory; Institut des Matériaux de Rouen, Université et INSA de Rouen; BP12, 76801 Saint Etienne du Rouvray Cedex France
| | - Nicolas Delpouve
- AMME-LECAP EA4528 International Laboratory; Institut des Matériaux de Rouen, Université et INSA de Rouen; BP12, 76801 Saint Etienne du Rouvray Cedex France
| | - Romuald Herbinet
- Laboratoire de Chimie Moléculaire Thio-organique (LCMT), UMR 6507, INC3M, FR3038, Ensicaen & Université de Caen; 6 boulevard du Maréchal Juin 14050 Caen France
| | - Sandra Domenek
- AgroParisTech, UMR1145 Ingénierie Procédés Aliments; 1 Avenue des Olympiades 91300 Massy France
| | - Loïc Le Pluart
- Laboratoire de Chimie Moléculaire Thio-organique (LCMT), UMR 6507, INC3M, FR3038, Ensicaen & Université de Caen; 6 boulevard du Maréchal Juin 14050 Caen France
| | - Laurent Delbreilh
- AMME-LECAP EA4528 International Laboratory; Institut des Matériaux de Rouen, Université et INSA de Rouen; BP12, 76801 Saint Etienne du Rouvray Cedex France
| | - Violette Ducruet
- INRA, UMR1145 Ingénierie Procédés Aliments; 1 Avenue des Olympiades 91300 Massy France
| | - Eric Dargent
- AMME-LECAP EA4528 International Laboratory; Institut des Matériaux de Rouen, Université et INSA de Rouen; BP12, 76801 Saint Etienne du Rouvray Cedex France
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33
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Li Q, Zhang R, Shao C, Wang Y, Shen C. Cold crystallization behavior of glassy poly(lactic acid) prepared by rapid compression. POLYM ENG SCI 2014. [DOI: 10.1002/pen.23902] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Qian Li
- International Joint Research Laboratory for Micro-Nano Moulding Technology of Henan Province; Zhengzhou University; Zhengzhou China
| | - Ruijing Zhang
- National Engineering Research Center for Advanced Polymer Processing Technology and Department of Engineering Mechanics; Zhengzhou University; Zhengzhou China
| | - Chunguang Shao
- International Joint Research Laboratory for Micro-Nano Moulding Technology of Henan Province; Zhengzhou University; Zhengzhou China
- National Engineering Research Center for Advanced Polymer Processing Technology and Department of Engineering Mechanics; Zhengzhou University; Zhengzhou China
| | - Yaming Wang
- National Engineering Research Center for Advanced Polymer Processing Technology and Department of Engineering Mechanics; Zhengzhou University; Zhengzhou China
| | - Changyu Shen
- National Engineering Research Center for Advanced Polymer Processing Technology and Department of Engineering Mechanics; Zhengzhou University; Zhengzhou China
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34
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Olmos D, Martín EV, González-Benito J. New molecular-scale information on polystyrene dynamics in PS and PS–BaTiO3composites from FTIR spectroscopy. Phys Chem Chem Phys 2014; 16:24339-49. [DOI: 10.1039/c4cp03516j] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A study of thermal relaxations in PS and PS–BaTiO3composites using FTIR spectroscopy: in-depth analysis and new molecular-scale information.
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Affiliation(s)
- D. Olmos
- Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Química and IQMAAB
- Universidad Carlos III de Madrid
- 28911 Leganés, Spain
| | - E. V. Martín
- Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Química and IQMAAB
- Universidad Carlos III de Madrid
- 28911 Leganés, Spain
| | - J. González-Benito
- Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Química and IQMAAB
- Universidad Carlos III de Madrid
- 28911 Leganés, Spain
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35
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Sato K, Sprengel W. Element-specific study of local segmental dynamics of polyethylene terephthalate upon physical aging. J Chem Phys 2013; 137:104906. [PMID: 22979889 DOI: 10.1063/1.4751553] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Time-dependent relaxation processes upon physical aging below the glass transition temperature have been studied in polyethylene terephthalate by high-precision dilatometry (DLT), differential scanning calorimetry (DSC), and element-specific positron and positronium (Ps) annihilation spectroscopy. The macroscopic volume change observed by DLT can be described by the Kohlrausch-Williams-Watts decay function, whereas changes in the relaxation enthalpies evaluated by DSC and free volumes probed by positron and Ps annihilation spectroscopy are reproduced by two superimposed exponentials. The multi-method approach reveals three kinds of relaxation processes with characteristic relaxation times: (a) fast Arrhenius-type β relaxation involving the instantaneous local segmental densification along with the exclusion of oxygen atoms from free volumes, (b) macroscopically observable non-Arrhenius-type α relaxation originated from a distribution of relaxation times due to the heterogeneous dynamics of solid-state- and liquid-state-like local segments, and (c) extremely slow Arrhenius-type α relaxation as the consequence of a uniform relaxation time solely due to the thermal dependence of nanometer-scale solid-state-like local segments.
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Affiliation(s)
- K Sato
- Department of Environmental Sciences, Tokyo Gakugei University, 4-1-1 Koganei, Tokyo 184-8501, Japan
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36
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Embrittlement of poly (L-lactide)/poly (ε-caprolactone) blends upon physical aging. JOURNAL OF POLYMER RESEARCH 2012. [DOI: 10.1007/s10965-012-9936-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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37
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Abstract
Poly (L-lactic acid) (PLLA) and composite of PLLA with osteoconductiveβ-tricalcium phosphate fine powder (PLLA/TCP) compression moulded specimens were subjected toin vitrobiodegradation up one year. Samples were investigated in terms of physical-chemical evaluation after several periods of incubationin simulated body fluid solution. Reduction in PLLA molecular weights occurred during thermal processing of compounding of the polymer with TCP. 3-point bending measurements revealed some decay in the flexural strength and increase in stiffness after incorporation of the inorganic particles into the polymer. Those parameters remained nearly stable during the biodegradation period despite constant drop of polymer molecular weight. Thermal properties of both kinds of samples did not changed significantly, however degree of crystallinity of PLLA matrix was increasing slowly in pure PLLA samples. Despite no mass loss,extent of surface deteriorationincreased steady during the incubation. Current study is intended to develop material for implants, mainly fusion cages targeted for spinal applications.
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38
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Pan P, Yang J, Shan G, Bao Y, Weng Z, Cao A, Yazawa K, Inoue Y. Temperature-Variable FTIR and Solid-State 13C NMR Investigations on Crystalline Structure and Molecular Dynamics of Polymorphic Poly(l-lactide) and Poly(l-lactide)/Poly(d-lactide) Stereocomplex. Macromolecules 2011. [DOI: 10.1021/ma201906a] [Citation(s) in RCA: 173] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pengju Pan
- State Key
Laboratory of Chemical
Engineering, Department of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027,
China
| | - Jinjun Yang
- Department of Biomolecular
Engineering, Tokyo Institute of Technology, 4259-B-55 Nagatsuta,
Midori-ku, Yokohama 226-8501, Japan
- School of Environmental Science
and Safety Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Guorong Shan
- State Key
Laboratory of Chemical
Engineering, Department of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027,
China
| | - Yongzhong Bao
- State Key
Laboratory of Chemical
Engineering, Department of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027,
China
| | - Zhixue Weng
- State Key
Laboratory of Chemical
Engineering, Department of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027,
China
| | - Amin Cao
- Laboratory for Polymer Materials,
Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Koji Yazawa
- Department of Biomolecular
Engineering, Tokyo Institute of Technology, 4259-B-55 Nagatsuta,
Midori-ku, Yokohama 226-8501, Japan
| | - Yoshio Inoue
- Department of Biomolecular
Engineering, Tokyo Institute of Technology, 4259-B-55 Nagatsuta,
Midori-ku, Yokohama 226-8501, Japan
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39
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Zhang T, Hu J, Duan Y, Pi F, Zhang J. Physical Aging Enhanced Mesomorphic Structure in Melt-Quenched Poly(l-lactic acid). J Phys Chem B 2011; 115:13835-41. [DOI: 10.1021/jp2087863] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tongping Zhang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao City 266042, People’s Republic of China
| | - Jian Hu
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao City 266042, People’s Republic of China
| | - Yongxin Duan
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao City 266042, People’s Republic of China
| | - Fuwei Pi
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao City 266042, People’s Republic of China
| | - Jianming Zhang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao City 266042, People’s Republic of China
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40
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Liang X, Chen B, Fu J. Study on O-Terphenyl/Polystyrene Blends: How Plasticizer Affects the Glass Transition of Polystyrene? J MACROMOL SCI B 2011. [DOI: 10.1080/00222348.2011.609792] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Xiaofan Liang
- a Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering , Tianjin University , Tianjin , P. R. China
| | - Banglie Chen
- a Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering , Tianjin University , Tianjin , P. R. China
| | - Jianjian Fu
- a Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering , Tianjin University , Tianjin , P. R. China
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41
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Na B, Zou S, Lv R, Luo M, Pan H, Yin Q. Unusual Cold Crystallization Behavior in Physically Aged Poly(l-lactide). J Phys Chem B 2011; 115:10844-8. [DOI: 10.1021/jp2060816] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bing Na
- Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, School of Biology, Chemistry and Material Science, East China Institute of Technology, Fuzhou, 344000, People's Republic of China
| | - Shufen Zou
- Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, School of Biology, Chemistry and Material Science, East China Institute of Technology, Fuzhou, 344000, People's Republic of China
| | - Ruihua Lv
- Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, School of Biology, Chemistry and Material Science, East China Institute of Technology, Fuzhou, 344000, People's Republic of China
| | - Mingbiao Luo
- Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, School of Biology, Chemistry and Material Science, East China Institute of Technology, Fuzhou, 344000, People's Republic of China
| | - Huayan Pan
- Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, School of Biology, Chemistry and Material Science, East China Institute of Technology, Fuzhou, 344000, People's Republic of China
| | - Qiang Yin
- Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, School of Biology, Chemistry and Material Science, East China Institute of Technology, Fuzhou, 344000, People's Republic of China
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Liang X, Huang D. New Insights into the Effects of Physical Aging on Glass Transition of Polystyrene by FTIR. J MACROMOL SCI B 2011. [DOI: 10.1080/00222348.2011.596796] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Xiaofan Liang
- a Tianjin Key Laboratory of Composite and Functional Materials , School of Materials Science and Engineering, Tianjin University , Tianjin , PR China
| | - Dinghai Huang
- a Tianjin Key Laboratory of Composite and Functional Materials , School of Materials Science and Engineering, Tianjin University , Tianjin , PR China
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Sasaki T, Morino D, Tabata N. Origin of enhanced cold crystallization rate for freeze-dried poly(L
-lactide) from solutions. POLYM ENG SCI 2011. [DOI: 10.1002/pen.21977] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Tsuji H, Kamo S, Horii F. Solid-state 13C NMR analyses of the structures of crystallized and quenched poly(lactide)s: Effects of crystallinity, water absorption, hydrolytic degradation, and tacticity. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.03.017] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zhang J, Duan Y, Domb AJ, Ozaki Y. PLLA Mesophase and Its Phase Transition Behavior in the PLLA−PEG−PLLA Copolymer As Revealed by Infrared Spectroscopy. Macromolecules 2010. [DOI: 10.1021/ma100301h] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jianming Zhang
- Key Laboratory of Rubber-plastics, Ministry of Education, Qingdao University of Science and Technology, Qingdao City 266042, People’s Republic of China
| | - Yongxin Duan
- Key Laboratory of Rubber-plastics, Ministry of Education, Qingdao University of Science and Technology, Qingdao City 266042, People’s Republic of China
| | - Abraham J. Domb
- Department of Medicinal Chemistry, School of Pharmacy, Faculty of Medicine, the Hebrew University of Jerusalem, P.O. Box 12065, Jerusalem 91120, Israel
| | - Yukihiro Ozaki
- Department of Chemistry, School of Science and Technology, and Research Center for Environment Friendly Polymers, Kwansei-Gakuin University, Gakuen, Sanda 669-1337, Japan
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