1
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Han D, Tian H, Liu L, Cao L, Cao H, Yu X. Scalable manufacturing of an amide-based nucleating agent for transparency and high heat resistance of polylactic acid. Int J Biol Macromol 2024; 264:130574. [PMID: 38453125 DOI: 10.1016/j.ijbiomac.2024.130574] [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: 12/01/2023] [Revised: 02/29/2024] [Accepted: 02/29/2024] [Indexed: 03/09/2024]
Abstract
The prevalent use of disposable plastic tableware presents notable environmental and health risks. An alternative, polylactic acid (PLA), often does not meet usage requirements due to its low crystallization rate. This research introduces an amide-based nucleating agent, BRE-T-100, developed through a straightforward method to enhance the heat resistance and crystallization rate of PLA. This study systematically investigates the impact of BRE-T-100 and other nucleating agents on the properties of PLA composites. The incorporation of 0.8 % BRE-T-100 increases the crystallization temperature of PLA from 109.6 °C to 131.9 °C. Further, the total crystallization time of PLA composites at 120 °C is reduced to <60 s, while maintaining good transparency. BRE-T-100 exhibits superior comprehensive properties compared to talcum, TMC-200, and TMC-300 and is nearly on par with LAK-301. Its application as a nucleating agent in PLA-based disposable tableware shows promise.
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Affiliation(s)
- Dequan Han
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China
| | - Huhu Tian
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China
| | - Lantao Liu
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Luya Cao
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China
| | - Hongzhang Cao
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China.
| | - Xiaoli Yu
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China
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2
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Marchi P, Wang W, Puig C, Martin A, Crovetto T, Labidi J, Riva R, Cavallo D, Moni L. Synthesis of symmetric bis-α-ketoamides from renewable starting materials and comparative study of their nucleating efficiency in PLLA. RSC Adv 2023; 13:4994-5001. [PMID: 36762081 PMCID: PMC9906979 DOI: 10.1039/d2ra07934h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
An efficient and smart synthesis of bis-α-ketoamides has been disclosed. The desired products have been obtained through a Passerini multicomponent reaction using biobased aldehydes, acetic acid and bis-isocyanides (prepared from the corresponding biobased diamides), followed by a deprotection/oxidation step. The effect of the synthesized compounds on the crystallization behavior of poly(l-lactide) (PLLA) has been investigated by differential scanning calorimetry (DSC) in non-isothermal conditions. Among all the synthesized compounds, only a few are able to meaningfully enhance the nucleation of PLLA, as confirmed by a shift of the polymer crystallization peak temperature towards higher values. With the research of active polymer nucleating agents being mostly empirical, the combinatorial synthetic approach proposed herein, coupled with the possibility of a small scale mixing procedure, can potentially represent a useful strategy for the discovery of new efficient biobased polymer additives.
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Affiliation(s)
- Pietro Marchi
- Department of Chemistry and Industrial Chemistry, University of Genoa Via Dodecaneso 31 Genova 16146 Italy
| | - Wei Wang
- Department of Chemistry and Industrial Chemistry, University of Genoa Via Dodecaneso 31 Genova 16146 Italy
| | - Cristián Puig
- Departamento de Ciencias de los Materiales, Universidad Simón Bolívar Apartado 89000 Caracas 1080A Venezuela
| | - Ander Martin
- Chemical & Environmental Engineering Department, Faculty of Engineering, University of the Basque Country UPV/EHU Gipuzkoa, Plaza Europa 1 Donostia 20018 Spain
| | - Tullio Crovetto
- Department of Chemistry and Industrial Chemistry, University of Genoa Via Dodecaneso 31 Genova 16146 Italy
| | - Jalel Labidi
- Chemical & Environmental Engineering Department, Faculty of Engineering, University of the Basque Country UPV/EHU Gipuzkoa, Plaza Europa 1 Donostia 20018 Spain
| | - Renata Riva
- Department of Chemistry and Industrial Chemistry, University of Genoa Via Dodecaneso 31 Genova 16146 Italy
| | - Dario Cavallo
- Department of Chemistry and Industrial Chemistry, University of Genoa Via Dodecaneso 31 Genova 16146 Italy
| | - Lisa Moni
- Department of Chemistry and Industrial Chemistry, University of Genoa Via Dodecaneso 31 Genova 16146 Italy
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3
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He Z, Shao H, Zhang N, Li J, Xiao H, Weng T, Zhou M, Wen B, Chen Y. The crystalline behavior of poly(
L
‐lactide) induced by nucleating agents with amide structure: The effect of benzamide molecule symmetry. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zejian He
- College of Materials Science and Engineering Zhejiang University of Technology Zhejiang People's Republic of China
| | - Haifeng Shao
- College of Materials Science and Engineering Zhejiang University of Technology Zhejiang People's Republic of China
| | - Nannan Zhang
- Department of Chemistry Tsinghua University Beijing People's Republic of China
| | - Jie Li
- College of Materials Science and Engineering Zhejiang University of Technology Zhejiang People's Republic of China
| | - Hai Xiao
- Department of Chemistry Tsinghua University Beijing People's Republic of China
| | - Tianhang Weng
- College of Materials Science and Engineering Zhejiang University of Technology Zhejiang People's Republic of China
| | - Mi Zhou
- College of Materials Science and Engineering Zhejiang University of Technology Zhejiang People's Republic of China
| | - Bianying Wen
- School of Materials and Mechanical Engineering, Key Laboratory of Processing and Quality Evaluation Technology of Green Plastics of China National Light Industry Council Beijing Technology and Business University Beijing People's Republic of China
| | - Yulong Chen
- College of Materials Science and Engineering Zhejiang University of Technology Zhejiang People's Republic of China
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4
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Molina-Paredes AA, Lara-Cerón JA, Ibarra-Rodríguez M, del Angel-Mosqueda C, Dias HR, Jiménez-Pérez VM, Muñoz-Flores BM. Supramolecular interactions in X-ray structures of oxalamides: Green synthesis and characterization. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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5
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Yu M, Du Y, Xu P, Yang W, Zhang P, Liu T, Lemstra PJ, Ma P. Nucleation and crystallization of poly(L-lactide) assisted by terminal hydrogen-bonding segments. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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6
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Yu M, Xu Y, Xu P, Du Y, Yang W, Zhang P, Ma P. Tailoring the crystallization of poly( l-lactide) via structural optimization of hydrogen-bonding segments with different aliphatic spacer lengths. Polym Chem 2022. [DOI: 10.1039/d2py01071b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A series of hydroxy-terminated oxalamide segments (OXA-n, HO-(CH2)n-NHCOCONH-(CH2)n-OH, n = 2, 4 and 6) were designed as initiators for ring-opening polymerization and then poly(l-lactide) with OXA-n in the middle (PLLAOXA-n) were synthesized.
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Affiliation(s)
- Manman Yu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Yunsheng Xu
- Zhejiang Sci-Tech University, Sch Mat Sci & Engn, Hangzhou 310018, People's Republic of China
| | - Pengwu Xu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Youpei Du
- Key Laboratory of Science and Technology on High-tech Polymer Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100049, China
| | - Weijun Yang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Pingxia Zhang
- Key Laboratory of Science and Technology on High-tech Polymer Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100049, China
| | - Piming Ma
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
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7
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Wang W, Saperdi A, Dodero A, Castellano M, Müller AJ, Dong X, Wang D, Cavallo D. Crystallization of a Self-Assembling Nucleator in Poly(l-lactide) Melt. CRYSTAL GROWTH & DESIGN 2021; 21:5880-5888. [PMID: 34650340 PMCID: PMC8499044 DOI: 10.1021/acs.cgd.1c00750] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/04/2021] [Indexed: 06/13/2023]
Abstract
In the present work, crystallization of a soluble nucleator N, N', N″-tricyclohexyl-1,3,5-benzenetricarboxylamide (TMC-328) in a poly(l-lactic acid) (PLLA) matrix has been studied at different temperatures. Based on the change in solubility with temperature, different levels of supersaturation of TMC-328 in a PLLA matrix can be obtained. This nucleator presents a fibrous structure produced via self-assembling and develops into an interconnected network when the temperature is lowered. The TMC-328 crystal nuclei density is quantified via optical microscopy, using the average distance of the adjacent fibrillar structure, which shows a steady decrease with the decrease in temperature. The crystallization rates of TMC-328 were assessed through rheological measurements of network formation. Both fibrils' density and crystallization kinetics display a power law dependence on supersaturation. For the first time, the solid-melt interfacial energy, the size of the critical nucleus, and the number of molecules making up the critical nucleus of the nucleator TMC-328 in the PLLA matrix have been determined by adopting the classical nucleation theory. The subsequent crystallization of PLLA induced by this nucleator was investigated as a function of the fibrils' spatial density. The crystallization rate of PLLA is enhanced with the increase in the TMC-328 fibrils' density because of the availability of a larger nucleating surface. The self-assembled fibril of TMC-328 can serve as shish to form a hybrid shish-kebab structure after the crystallization of PLLA, regardless of the number of nucleation sites.
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Affiliation(s)
- Wei Wang
- Department
of Chemistry and Industrial Chemistry, University
of Genoa, Via Dodecaneso 31, Genova 16146, Italy
| | - Angelo Saperdi
- Department
of Chemistry and Industrial Chemistry, University
of Genoa, Via Dodecaneso 31, Genova 16146, Italy
| | - Andrea Dodero
- Department
of Chemistry and Industrial Chemistry, University
of Genoa, Via Dodecaneso 31, Genova 16146, Italy
| | - Maila Castellano
- Department
of Chemistry and Industrial Chemistry, University
of Genoa, Via Dodecaneso 31, Genova 16146, Italy
| | - Alejandro J. Müller
- POLYMAT
and Department of Polymers and Advanced Materials: Physics, Chemistry
and Technology, Faculty of Chemistry, University
of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal, 3, 20018 Donostia—San Sebastian, Spain
- IKERBASQUE,
Basque Foundation for Science, Bilbao 48009, Spain
| | - Xia Dong
- Beijing
National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Dujin Wang
- Beijing
National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Dario Cavallo
- Department
of Chemistry and Industrial Chemistry, University
of Genoa, Via Dodecaneso 31, Genova 16146, Italy
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8
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Yu MM, Yang WJ, Niu DY, Cai XX, Weng YX, Dong WF, Chen MQ, Xu PW, Wang Y, Chu H, Ma PM. Enhancing the Crystallization Performance of Poly(L-lactide) by Intramolecular Hybridizing with Tunable Self-assembly-type Oxalamide Segments. CHINESE JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1007/s10118-020-2461-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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9
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Li-Sha Zhao, Yan-Hua Cai. Non-isothermal Crystallization, Melting Behavior, Thermal Decomposition, Fluidity and Mechanical Properties of Melt Processed Poly(L-lactic acid) Nucleated by N,N'-Adipic Bis(piperonylic acid) Dihydrazide. POLYMER SCIENCE SERIES A 2020. [DOI: 10.1134/s0965545x20040124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Zhao LS, Cai YH. Insight on the effect of a piperonylic acid derivative on the
crystallization process, melting behavior, thermal stability, optical and mechanical
properties of poly(l-lactic acid). E-POLYMERS 2020. [DOI: 10.1515/epoly-2020-0027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A new piperonylic acid derivative (BPASD) was synthesized and evaluated as an organic
nucleating agent for poly(l-lactic acid) (PLLA) via melt-crystallization;
the other behaviors including cold-crystallization, melting process after
crystallization, thermal stability in air atmosphere, and optical and mechanical
properties of PLLA/BPASD samples were also investigated. The results of the
melt-crystallization investigation showed that, in comparison to virgin PLLA, the
BPASD could induce PLLA to crystallize in higher temperature region or at a faster
cooling rate, suggesting that the BPASD as a heterogeneous nucleating agent could
promote the crystallization of PLLA, but the melt-crystallization depended on the
cooling rate, BPASD concentration, and the final melting temperature. With increasing
of BPASD concentration, a shift to the lower temperature of cold-crystallization peak
and decrease of crystallization enthalpy indicated that BPASD had an inhibition for
the cold-crystallization of PLLA to some extent. The heating rate, crystallization
temperature, the BPASD, and its concentration were critical factors to the melting
process, and double-melting peaks appeared in heating were assigned to
melting–recrystallization. Thermal decomposition behavior revealed that the
addition of BPASD reduced the thermal stability of PLLA, but the interaction of PLLA
and BPASD could prevent the decrease of the onset decomposition temperature. Further,
the BPASD also decreased the light transmittance and elongation at the break of PLLA,
but the tensile modulus and tensile strength of PLLA were enhanced.
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Affiliation(s)
- Li-Sha Zhao
- Chongqing Key Laboratory of Environmental Materials & Remediation Technologies , Chongqing University of Arts and Sciences , Chongqing , 402160 , P. R. China
| | - Yan-Hua Cai
- Chongqing Key Laboratory of Environmental Materials & Remediation Technologies , Chongqing University of Arts and Sciences , Chongqing , 402160 , P. R. China
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11
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Wei Z, Shao S, Sui M, Song P, He M, Xu Q, Leng X, Wang Y, Li Y. Development of zinc salts of amino acids as a new class of biocompatible nucleating agents for poly(l-lactide). Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.05.064] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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12
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Wilsens CHRM, Hawke LGD, de Kort GW, Saidi S, Roy M, Leoné N, Hermida-Merino D, Peters GWM, Rastogi S. Effect of Thermal History and Shear on the Viscoelastic Response of iPP Containing an Oxalamide-Based Organic Compound. Macromolecules 2019; 52:2789-2802. [PMID: 30983633 PMCID: PMC6459004 DOI: 10.1021/acs.macromol.8b02612] [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: 12/07/2018] [Revised: 02/18/2019] [Indexed: 11/30/2022]
Abstract
![]()
We
report on the role of temperature and shear on the melt behavior
of iPP in the presence of the organic compound N1,N1′-(propane-1,3-diyl)bis(N2-hexyloxalamide) (OXA3,6). It is demonstrated
that OXA3,6 facilitates a viscosity suppression when
it resides in the molten state. The viscosity suppression is attributed
to the interaction of iPP chains/subchains with molten OXA3,6 nanoclusters. The exact molecular mechanism has not
been identified; nevertheless, a tentative explanation is proposed.
The observed viscosity suppression appears similar to that encountered
in polymer melts filled with solid nanoparticles, with the difference
that the OXA3,6 compound reported in this study facilitates
the viscosity suppression in the molten state. Upon cooling, as crystal
growth of OXA3,6 progresses, the decrease in viscosity
is suppressed. Retrospectively, segmental absorption of iPP chains on the surface of micrometer-sized OXA3,6 crystallites
favors the formation of dangling arms, yielding OXA3,6 crystallites decorated with partially absorbed iPP chains. In other words, the resulting OXA3,6 particle
morphology resembles that of a hairy particle or a starlike polymer
chain. Such hairy particles effectively facilitate a viscosity enhancement,
similar to branched polymer chains. This hypothesis and its implications
for the shear behavior of iPP are discussed and supported
using plate–plate rheometry and slit-flow experiments combined
with small-angle X-ray scattering analysis.
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Affiliation(s)
- Carolus H R M Wilsens
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD Maastricht, The Netherlands
| | - Laurence G D Hawke
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD Maastricht, The Netherlands
| | - Gijs W de Kort
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD Maastricht, The Netherlands
| | - Sarah Saidi
- LMOPS, EA 4423, Université de Lorraine, CentraleSupelec Metz, 2 rue Edouard Belin, F-57070 Metz, France.,Netherlands Organisation for Scientific Research (NWO), DUBBLE@ESRF BP CS40220, 38043 Grenoble, France
| | - Manta Roy
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD Maastricht, The Netherlands
| | - Nils Leoné
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD Maastricht, The Netherlands
| | - Daniel Hermida-Merino
- Netherlands Organisation for Scientific Research (NWO), DUBBLE@ESRF BP CS40220, 38043 Grenoble, France
| | - Gerrit W M Peters
- Department of Mechanical Engineering, Materials Technology Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Sanjay Rastogi
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD Maastricht, The Netherlands
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13
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Zhao LS, Cai YH. Investigating the Physical Properties of Poly(L-lactic acid) Modified Using an Aromatics Succinic Dihydrazide Derivative. POLYMER SCIENCE SERIES A 2018. [DOI: 10.1134/s0965545x18070088] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Xu P, Cao Y, Lv P, Ma P, Dong W, Bai H, Wang W, Du M, Chen M. Enhanced crystallization kinetics of bacterially synthesized poly(3-hydroxybutyrate-co-3-hydroxyhexanate) with structural optimization of oxalamide compounds as nucleators. Polym Degrad Stab 2018. [DOI: 10.1016/j.polymdegradstab.2018.06.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Wilsens CHRM, Hawke LGD, Troisi EM, Hermida-Merino D, de Kort G, Leoné N, Saralidze K, Peters GWM, Rastogi S. Effect of Self-Assembly of Oxalamide Based Organic Compounds on Melt Behavior, Nucleation, and Crystallization of Isotactic Polypropylene. Macromolecules 2018; 51:4882-4895. [PMID: 30018462 PMCID: PMC6041772 DOI: 10.1021/acs.macromol.8b00489] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 05/22/2018] [Indexed: 11/29/2022]
Abstract
![]()
We report on the
effect of an aliphatic oxalamide based nucleating
agent (OXA3,6) on the melt and crystallization behavior
of isotactic polypropylene (iPP) under defined shear
conditions. Through polarized optical microscopy, we demonstrate that OXA3,6 self-assembles from the iPP melt into
rhombic crystals whereas their size and distribution proved highly
dependent on the employed cooling rates. The presence of 0.5 wt %
of OXA3,6 in iPP results in a significant
suppression in iPP melt viscosity, which could not
be explained via molecular modeling. A possible cause for the drop
in viscosity in the presence of OXA3,6 is attributed
to the interaction (absorption) of high molecular weight iPP chains with the nucleating agent, thereby suppressing their contribution
to the viscoelastic response of the melt. This proposed mechanism
for the suppression in melt viscosity appears similar to that encountered
by the homogeneous distribution of nanoparticles such as CNTs, graphene,
and silica. Shear experiments, performed using a slit flow device
combined with small-angle X-ray diffraction measurements, indicate
that crystallization is significantly enhanced in the presence of OXA3,6 at relatively low shear rates despite its lowered sensitivity
to shear. This enhancement in crystallization is attributed to the
shear alignment of the rhombic OXA3,6 crystals that provide
surface for iPP kebab growth upon cooling. Overall,
the suppression in melt viscosity in combination with enhanced nucleation
efficiency at low as well as high shear rates makes this self-assembling
oxalamide based nucleating agent a promising candidate for fast processing.
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Affiliation(s)
- Carolus H R M Wilsens
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
| | - Laurence G D Hawke
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
| | - Enrico M Troisi
- Department of Mechanical Engineering, Materials Technology Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Daniel Hermida-Merino
- Netherlands Organisation for Scientific Research (NWO), DUBBLE@ESRF BP CS40220, 38043 Grenoble, France
| | - Gijs de Kort
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
| | - Nils Leoné
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
| | - Ketie Saralidze
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
| | - Gerrit W M Peters
- Department of Mechanical Engineering, Materials Technology Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Sanjay Rastogi
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
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16
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Ma P, Yu Q, Shen T, Dong W, Chen M. Strong synergetic effect of fibril-like nucleator and shear flow on the melt crystallization of poly( l -lactide). Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2016.12.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Song P, Sang L, Zheng L, Wang C, Liu K, Wei Z. Insight into the role of bound water of a nucleating agent in polymer nucleation: a comparative study of anhydrous and monohydrated orotic acid on crystallization of poly(l-lactic acid). RSC Adv 2017. [DOI: 10.1039/c7ra02617j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The bound water of orotic acid and its dehydration transition play a negative role in nucleation effects on PLLA crystallization.
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Affiliation(s)
- Ping Song
- School of Materials Science and Engineering
- North University of China
- Taiyuan 030051
- China
| | - Lin Sang
- School of Automotive Engineering
- Dalian University of Technology
- Dalian 116024
- China
| | - Liuchun Zheng
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Chao Wang
- School of Materials Science and Engineering
- North University of China
- Taiyuan 030051
- China
| | - Kankan Liu
- School of Chemical and Environmental Engineering
- North University of China
- Taiyuan 030051
- China
| | - Zhiyong Wei
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- China
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18
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Shen T, Ma P, Yu Q, Dong W, Chen M. The Effect of Thermal History on the Fast Crystallization of Poly(l-Lactide) with Soluble-Type Nucleators and Shear Flow. Polymers (Basel) 2016; 8:E431. [PMID: 30974706 PMCID: PMC6432256 DOI: 10.3390/polym8120431] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 11/24/2016] [Accepted: 12/01/2016] [Indexed: 11/16/2022] Open
Abstract
The N₁,N₁'-(ethane-1,2-diyl)bis(N₂-phenyloxalamide) (OXA) is a soluble-type nucleator with a dissolving temperature of 230 °C in poly(l-lactic acid) (PLLA) matrix. The effect of thermal history and shear flow on the crystallization behavior of the PLLA/OXA samples was investigated by rheometry, polarized optical microscopy (POM), differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD), and scanning electron microscopy (SEM). The crystallization process of the PLLA/OXA-240 sample (i.e., pre-melted at 240 °C) was significantly promoted by applying a shear flow, e.g., the onset crystallization time (tonset) of the PLLA at 155 °C was reduced from 1600 to 200 s after shearing at 0.4 rad/s for even as short as 1.0 s, while the crystallinity (Xc) was increased to 40%. Moreover, the tonset of the PLLA/OXA-240 sample is 60%⁻80% lower than that of the PLLA/OXA-200 sample (i.e., pre-melted at 200 °C) with a total shear angle of 2 rad, indicating a much higher crystallization rate of the PLLA/OXA-240 sample. A better organization and uniformity of OXA fibrils can be obtained due to a complete pre-dissolution in the PLLA matrix followed by shear and oscillation treatments. The well dispersed OXA fibrils and flow-induced chain orientation are mainly responsible for the fast crystallization of the PLLA/OXA-240 samples. In addition, the shear flow created some disordered α'-form crystals in the PLLA/OXA samples regardless of the thermal history (200 or 240 °C).
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Affiliation(s)
- Tianfeng Shen
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
| | - Piming Ma
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
| | - Qingqing Yu
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
| | - Weifu Dong
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
| | - Mingqing Chen
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
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Deshmukh YS, Wilsens CHRM, Leoné N, Portale G, Harings JAW, Rastogi S. Melt-Miscible Oxalamide Based Nucleating Agents and Their Nucleation Efficiency in Isotactic Polypropylene. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b03120] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yogesh S. Deshmukh
- Department
of Biobased Materials, Faculty of Humanities and Sciences, Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
| | - Carolus H. R. M. Wilsens
- Department
of Biobased Materials, Faculty of Humanities and Sciences, Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
| | - Nils Leoné
- Department
of Biobased Materials, Faculty of Humanities and Sciences, Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
| | - Giuseppe Portale
- Zernike
Institute for Advanced Materials, University of Groningen, Nijenborgh
4, 9747 AG, Groningen, The Netherlands
| | - Jules A. W. Harings
- Department
of Biobased Materials, Faculty of Humanities and Sciences, Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
| | - Sanjay Rastogi
- Department
of Biobased Materials, Faculty of Humanities and Sciences, Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
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