1
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Yang R, Cai C, Chen Z, Zou G, Li J. The effect of dynamic vulcanization on the morphology and biodegradability of super toughened poly(lactic acid)/unsaturated poly(ether-ester) blends. Int J Biol Macromol 2023; 253:126790. [PMID: 37703967 DOI: 10.1016/j.ijbiomac.2023.126790] [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: 08/17/2023] [Revised: 09/05/2023] [Accepted: 09/05/2023] [Indexed: 09/15/2023]
Abstract
Preparing a super-tough polylactic acid (PLA) material while maintaining its biodegradability is a significant challenge. This study synthesized a biodegradable unsaturated poly(butylene succinate-co-fumarate)-poly(ethylene glycol) multiblock copolymer (PBSFG) and dynamically vulcanized it with PLA to obtain super-tough blends. The PBSFG self-vulcanized and formed a crosslinked "hard-soft" core-shell rubber phase in the blending process, where the PBSF segment acted as the core and PEG as the shell. As a result, the elongation at break and notched Izod impact strength of PLA increased significantly from 3 % to 66 % and from 3.2 to 58.0 kJ/m2, respectively. Furthermore, adding a small amount of dicumyl peroxide (DCP) promoted dynamic vulcanization and improved the compatibility between PLA and PBSFG. With the addition of 0.03 % DCP, the elongation at break and notched Izod impact strength of PLA/PBSFG were further increased to 218 % and 88.9 kJ/m2, respectively. Meanwhile, the crystallization rate of PLA was enhanced by the addition of PBSFG and DCP. The PLA/PBSFG blends also degraded in a proteinase K Tris-HCl buffered buffer solution. Finally, fully biodegradable and super-tough PLA blends were achieved.
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Affiliation(s)
- Rong Yang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China.
| | - Chaoyi Cai
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China
| | - Zhifan Chen
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China
| | - Guoxiang Zou
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China
| | - Jinchun Li
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China.
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2
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Wei Y, Wang Z, Zhou S, Li Z. Toughened transparent poly(L-lactic acid)/poly(D-lactide)-b-poly(butadiene)-b-poly(D-lactide) blended film with balanced strength. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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3
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Gu Z, Zhang J, Cao W, Liu X, Wang J, Zhang X, Chen W, Bao J. Extraordinary toughness and heat resistance enhancement of biodegradable PLA/PBS blends through the formation of a small amount of interface-localized stereocomplex crystallites during melt blending. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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4
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Qu Y, Chen Y, Ling X, Wu J, Hong J, Wang H, Li Y. Reactive Micro-Crosslinked Elastomer for Supertoughened Polylactide. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yingding Qu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People’s Republic of China
| | - Yihang Chen
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People’s Republic of China
| | - Xiayan Ling
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People’s Republic of China
| | - Jiali Wu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People’s Republic of China
| | - Jiangtao Hong
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People’s Republic of China
| | - Hengti Wang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People’s Republic of China
| | - Yongjin Li
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People’s Republic of China
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Substantially Enhanced Stereocomplex Crystallization of Poly(L-Lactide)/Poly(D-Lactide) Blends by the Formation of Multi-Arm Stereo-Block Copolymers. CRYSTALS 2022. [DOI: 10.3390/cryst12020210] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Stereocomplex-type polylactide (SC-PLA) created by alternate packing of poly(L-lactide) (PLLA) and poly(D-lactide) (PDLA) chains in a crystalline state has emerged as a growingly popular engineering bioplastic that possesses excellent hydrolytic stability and thermomechanical properties. However, it is extremely difficult to acquire high-performance SC-PLA products via melt-processing of high-molecular-weight PLLA/PDLA blends because both SC crystallites and homocrystallites (HCs) are competitively formed in the melt-crystallization. Herein, a facile yet powerful way was employed to boost SC formation by introducing trace amounts of some epoxy-functionalized small-molecule modifiers into the enantiomeric blends during reactive melt-blending. The results show that the SC formation is considerably enhanced with the in situ generation of multi-arm stereo-block PLA copolymers, based on the reaction between epoxy groups of the modifiers and hydroxyl end groups of PLAs. More impressively, it is intriguing to find that the introduction of only 0.5 wt% modifiers can induce exclusive SC formation in the blends upon isothermal and non-isothermal melt-crystallizations. The outstanding SC crystallizability might be attributed to the suppressing effect of such unique copolymers on the separation of the alternately arranged PLLA/PDLA chain segments in molten state as a compatibilizer. Furthermore, the generation of these copolymers does not result in a significant increase in melt viscosity of the blends. These findings suggest new opportunities for the high-throughput processing of SC-PLA materials into useful products.
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Wu BG, Yang WJ, Niu DY, Dong WF, Chen MQ, Liu TX, Du ML, Ma PM. Stereocomplexed Poly(lactide) Composites toward Engineering Plastics with Superior Toughness, Heat Resistance and Anti-hydrolysis. CHINESE JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1007/s10118-020-2443-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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7
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Crystallization kinetics and morphology of dynamically vulcanized poly(vinylidene fluoride)/silicone rubber blends. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-019-02768-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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8
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Wu B, Xu P, Yang W, Hoch M, Dong W, Chen M, Bai H, Ma P. Super‐Toughened Heat‐Resistant Poly(lactic acid) Alloys By Tailoring the Phase Morphology and the Crystallization Behaviors. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20190090] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Baogou Wu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of EducationJiangnan University, 1800 Lihu Road Wuxi 214122 China
| | - Pengwu Xu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of EducationJiangnan University, 1800 Lihu Road Wuxi 214122 China
| | - Weijun Yang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of EducationJiangnan University, 1800 Lihu Road Wuxi 214122 China
| | - Martin Hoch
- Arlanxeo High Performance Elastomers (Shanghai Branch), 150 Hubin Road Shanghai 200021 China
| | - Weifu Dong
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of EducationJiangnan University, 1800 Lihu Road Wuxi 214122 China
| | - Mingqing Chen
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of EducationJiangnan University, 1800 Lihu Road Wuxi 214122 China
| | - Huiyu Bai
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of EducationJiangnan University, 1800 Lihu Road Wuxi 214122 China
| | - Piming Ma
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of EducationJiangnan University, 1800 Lihu Road Wuxi 214122 China
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9
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Wang J, Zhang X, Jiang L, Qiao J. Advances in toughened polymer materials by structured rubber particles. Prog Polym Sci 2019. [DOI: 10.1016/j.progpolymsci.2019.101160] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Liu H, Chen N, Shan P, Song P, Liu X, Chen J. Toward Fully Bio-based and Supertough PLA Blends via in Situ Formation of Cross-Linked Biopolyamide Continuity Network. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01398] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Hongzhi Liu
- College of Engineering, Zhejiang A & F University, 666 Wushu Street, Hangzhou 311300, Zhejiang Province, People’s Republic of China
| | - Ning Chen
- College of Engineering, Zhejiang A & F University, 666 Wushu Street, Hangzhou 311300, Zhejiang Province, People’s Republic of China
| | - Pengjia Shan
- College of Engineering, Zhejiang A & F University, 666 Wushu Street, Hangzhou 311300, Zhejiang Province, People’s Republic of China
| | - Pingan Song
- College of Engineering, Zhejiang A & F University, 666 Wushu Street, Hangzhou 311300, Zhejiang Province, People’s Republic of China
| | - Xuying Liu
- School of Materials Science and Engineering, The Key Laboratory of Material Processing and Mold of Ministry of Education, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Jinzhou Chen
- School of Materials Science and Engineering, The Key Laboratory of Material Processing and Mold of Ministry of Education, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
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11
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Deng L, Xu C, Ding S, Fang H, Wang X, Wang Z. Processing a Supertoughened Polylactide Ternary Blend with High Heat Deflection Temperature by Melt Blending with a High Screw Rotation Speed. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01970] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Liang Deng
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Cui Xu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Shuangshuang Ding
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Huagao Fang
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei, Anhui 230009, P. R. China
| | - Xuehui Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhigang Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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12
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Improved heat resistance properties of poly(l-lactide)/basalt fiber biocomposites with high crystallinity under forming hybrid-crystalline morphology. Int J Biol Macromol 2019; 122:848-856. [DOI: 10.1016/j.ijbiomac.2018.10.178] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 10/18/2018] [Accepted: 10/25/2018] [Indexed: 11/24/2022]
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13
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Wu B, Zeng Q, Niu D, Yang W, Dong W, Chen M, Ma P. Design of Supertoughened and Heat-Resistant PLLA/Elastomer Blends by Controlling the Distribution of Stereocomplex Crystallites and the Morphology. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02262] [Citation(s) in RCA: 113] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Baogou Wu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Qingtao Zeng
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Deyu Niu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Weijun Yang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Weifu Dong
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Mingqing Chen
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Piming Ma
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
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14
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Cao X, Dong W, He M, Zhang J, Ren F, Li Y. Effects of blending sequences and molecular structures of the compatibilizers on the morphology and properties of PLLA/ABS blends. RSC Adv 2019; 9:2189-2198. [PMID: 35516126 PMCID: PMC9059748 DOI: 10.1039/c8ra09193e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 12/23/2018] [Indexed: 11/29/2022] Open
Abstract
The effects of molecular structures of the compatibilizers and blending sequences on the morphology and properties of the immiscible poly(l-lactide)/acrylonitrile-butadiene-styrene (PLLA/ABS) blend are investigated herein. The comb-like polymers (RC), which are constituted by a poly(methyl methacrylate) (PMMA) backbone and side chains and a few epoxy groups distributed randomly along the backbone, are found to be better compatibilizers for improving the morphology and mechanical properties of the PLLA/ABS blend, compared to linear polymers (RL) constituted by a PMMA backbone and epoxy groups along the backbone. In addition, the blending sequence, which dictates the extent of grafting reaction between carboxyl end groups of PLLA and epoxy groups in the RL and RC compatibilizers, is found to influence the diffusion and location of the in situ formed RL-g-PLLA and RC-g-PLLA polymers in the blend system. By blending RL or RC polymers with ABS phase firstly, the epoxy groups are diluted by ABS phase; thus, during the second step, blending with PLLA phase, lightly grafted polymers are formed. This method is found to be the best sequence to compatibilize the PLLA/ABS system. When the PLLA phase is mixed with the compatibilizers firstly, the highly grafted polymers are prone to be trapped in the PLLA phase, because the PMMA segments are shielded by the densely grafted PLLA segments from interacting efficiently with the ABS phase, and thus the morphology and mechanical properties of the blend deteriorate accordingly. The morphology and properties of compatibilized PLLA/ABS blends can be optimized by using appropriate compatibilizers and blending sequences.![]()
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Affiliation(s)
- Xiaojun Cao
- College of Material, Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- P. R. China
| | - Wenyong Dong
- College of Material, Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- P. R. China
| | - Meifeng He
- College of Material, Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- P. R. China
| | - Junqing Zhang
- College of Material, Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- P. R. China
| | - Fanglu Ren
- College of Material, Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- P. R. China
| | - Yongjin Li
- College of Material, Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- P. R. China
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15
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Jing Z, Li J, Xiao W, Xu H, Hong P, Li Y. Crystallization, rheology and mechanical properties of the blends of poly(l-lactide) with supramolecular polymers based on poly(d-lactide)–poly(ε-caprolactone-co-δ-valerolactone)–poly(d-lactide) triblock copolymers. RSC Adv 2019; 9:26067-26079. [PMID: 35531016 PMCID: PMC9070369 DOI: 10.1039/c9ra04283k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 08/04/2019] [Indexed: 01/01/2023] Open
Abstract
In this study, we investigated the blending of poly(l-lactide) (PLLA) with supramolecular polymers based on poly(d-lactide)–poly(ε-caprolactone-co-δ-valerolactone)–poly(d-lactide) (PDLA–PCVL–PDLA) triblock copolymers as an efficient way to modify PLLA. The supramolecular polymers (SMP) were synthesized by the terminal functionalization of the PDLA–PCVL–PDLA copolymers with 2-ureido-4[1H]-pyrimidinone (UPy). The structure, thermal properties and rheological behavior of the synthesized supramolecular polymers were studied; we found that the formation of the UPy dimers expanded the molecular chain of the polymer and the incorporation of the UPy groups suppressed the crystallization of polymers. In addition, the synthesized supramolecular polymers had a low glass transition temperature of about −50 °C, showing the characteristics of elastomers. On this basis, superior properties such as a fast crystallization rate, high melt strength, and toughness of fully bio-based, i.e., PLA-based materials were achieved simultaneously by blending PLLA with the synthesized supramolecular polymers. In the PLLA/SMP blends, PLLA could form a stereocomplex with its enantiomeric PDLA blocks of supramolecular polymers, and the stereocomplex crystals with the cross-linking networks reinforced the melt strength of the PLLA/SMP blends. The influences of the SMP composition and the SMP content in the PLLA matrix on crystallization and mechanical properties were analyzed. The supramolecular polymers SMP0.49 and SMP1.04 showed a reverse effect on the crystallization of PLLA. Tensile tests revealed that the lower content of the synthesized supramolecular polymers could achieve toughening of the PLLA matrix. Therefore, the introduction of supramolecular polymers based on PDLA–PCVL–PDLA is an effective way to control the crystallization, rheology and mechanical properties of PLLA. Supramolecular polymer based on PDLA–PCVL–PDLA triblock copolymer was used for the modification of PLLA, and the results showed that it is an effective way to control the crystallization, rheology and mechanical properties of PLLA.![]()
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Affiliation(s)
- Zhanxin Jing
- Department of Applied Chemistry
- College of Chemistry and Environment
- Guangdong Ocean University
- Zhanjiang
- China
| | - Jin Li
- Department of Applied Chemistry
- College of Chemistry and Environment
- Guangdong Ocean University
- Zhanjiang
- China
| | - Weiyu Xiao
- Department of Applied Chemistry
- College of Chemistry and Environment
- Guangdong Ocean University
- Zhanjiang
- China
| | - Hefeng Xu
- Department of Applied Chemistry
- College of Chemistry and Environment
- Guangdong Ocean University
- Zhanjiang
- China
| | - Pengzhi Hong
- Department of Applied Chemistry
- College of Chemistry and Environment
- Guangdong Ocean University
- Zhanjiang
- China
| | - Yong Li
- Department of Applied Chemistry
- College of Chemistry and Environment
- Guangdong Ocean University
- Zhanjiang
- China
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16
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Yang DD, Liu W, Zhu HM, Wu G, Chen SC, Wang XL, Wang YZ. Toward Super-Tough Poly(l-lactide) via Constructing Pseudo-Cross-link Network in Toughening Phase Anchored by Stereocomplex Crystallites at the Interface. ACS APPLIED MATERIALS & INTERFACES 2018; 10:26594-26603. [PMID: 30019579 DOI: 10.1021/acsami.8b06343] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We demonstrated a novel strategy to toughen poly(l-lactide) (PLLA) by constructing pseudo-cross-link networks based on chain entanglements of long-chain branched structure in the toughening phase, which were anchored by stereocomplex (SC) crystallites at the interface. The formation of pseudo-cross-link network was achieved by simple blending of the copolymer of long-chain branched polycaprolactone and poly(d-lactide) (LB-PCL- b-DLA) with PLLA without introducing any chemical cross-linking structure or nonbiodegradable component. The microscopic morphology analysis suggests that the interface-formed SC crystallites not only enhanced the interfacial interaction between LB-PCL and PLLA but also obviously increased the matrix crystallization rate. Different from those blends without SC crystallites or long-chain branched structures, nano-microgels were observed in chloroform solution of the PLLA/LB-PCL- b-DLA blend, suggesting the formation of pseudo-cross-link network. The pseudo-cross-link network in LB-PCL toughening phase endows PLLA a significantly improved impact toughness (49.5 kJ/m2), which is almost 13 times than that of neat PLLA. Moreover, matrix crystallinity and spherulite size of the PLLA matrix also play significant roles in toughening. Only sufficiently crystallized PLLA with proper spherulite size can effectively trigger the matrix shear yielding, meanwhile, facilitate the energy dissipating.
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Affiliation(s)
- Dan-Dan Yang
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Wen Liu
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Hong-Mei Zhu
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Gang Wu
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Si-Chong Chen
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Xiu-Li Wang
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Yu-Zhong Wang
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry , Sichuan University , Chengdu 610064 , China
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17
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Wang Y, Zhang C, Ren Y, Ding T, Yuan D, Chen Y. Shape memory properties of dynamically vulcanized poly(lactic acid)/nitrile butadiene rubber (PLA/NBR) thermoplastic vulcanizates: The effect of ACN content in NBR. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4345] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yanpeng Wang
- School of Chemistry and Chemical Engineering; Henan University; Kaifeng 475004 China
- The Key Laboratory of Polymer Processing Engineering, Ministry of Education; South China University of Technology; Guangzhou 510640 China
| | - Chunhua Zhang
- School of Chemistry and Chemical Engineering; Henan University; Kaifeng 475004 China
| | - Yanrong Ren
- School of Chemistry and Chemical Engineering; Henan University; Kaifeng 475004 China
| | - Tao Ding
- School of Chemistry and Chemical Engineering; Henan University; Kaifeng 475004 China
| | - Daosheng Yuan
- The Key Laboratory of Polymer Processing Engineering, Ministry of Education; South China University of Technology; Guangzhou 510640 China
| | - Yukun Chen
- The Key Laboratory of Polymer Processing Engineering, Ministry of Education; South China University of Technology; Guangzhou 510640 China
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18
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Li Z, Song S, Zhao X, Lv X, Sun S. Grafting Modification of the Reactive Core-Shell Particles to Enhance the Toughening Ability of Polylactide. MATERIALS 2017; 10:ma10080957. [PMID: 28813019 PMCID: PMC5578323 DOI: 10.3390/ma10080957] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 08/08/2017] [Accepted: 08/14/2017] [Indexed: 11/16/2022]
Abstract
In order to overcome the brittleness of polylactide (PLA), reactive core-shell particles (RCS) with polybutadiene as core and methyl methacrylate-co-styrene-co-glycidyl methacrylate as shell were prepared to toughen PLA. Tert-dodecyl mercaptan (TDDM) was used as chain transfer agent to modify the grafting properties (such as grafting degree, shell thickness, internal and external grafting) of the core-shell particles. The introduction of TDDM decreased the grafting degree, shell thickness and the Tg of the core phase. When the content of TDDM was lower than 1.15%, the RCS particles dispersed in the PLA matrix uniformly-otherwise, agglomeration took place. The addition of RCS particles induced a higher cold crystallization temperature and a lower melting temperature of PLA which indicated the decreased crystallization ability of PLA. Dynamic mechanical analysis (DMA) results proved the good miscibility between PLA and the RCS particles and the increase of TDDM in RCS induced higher storage modulus of PLA/RCS blends. Suitable TDDM addition improved the toughening ability of RCS particles for PLA. In the present research, PLA/RCS-T4 (RCS-T4: the reactive core-shell particles with 0.76 wt % TDDM addition) blends displayed much better impact strength than other blends due to the easier cavitation/debonding ability and good dispersion morphology of the RCS-T4 particles. When the RCS-T4 content was 25 wt %, the impact strength of PLA/RCS-T4 blend reached 768 J/m, which was more than 25 times that of the pure PLA.
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Affiliation(s)
- Zhaokun Li
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, Changchun University of Technology, Changchun 130012, China.
| | - Shixin Song
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, Changchun University of Technology, Changchun 130012, China.
| | - Xuanchen Zhao
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, Changchun University of Technology, Changchun 130012, China.
| | - Xue Lv
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, Changchun University of Technology, Changchun 130012, China.
| | - Shulin Sun
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, Changchun University of Technology, Changchun 130012, China.
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19
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Luo Y, Ju Y, Bai H, Liu Z, Zhang Q, Fu Q. Tailor-Made Dispersion and Distribution of Stereocomplex Crystallites in Poly(l-lactide)/Elastomer Blends toward Largely Enhanced Crystallization Rate and Impact Toughness. J Phys Chem B 2017; 121:6271-6279. [DOI: 10.1021/acs.jpcb.7b03976] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuanlin Luo
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Yilong Ju
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Hongwei Bai
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Zhenwei Liu
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Qin Zhang
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Qiang Fu
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
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20
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Li S, Deng L, Xu C, Wu Q, Wang Z. Making a Supertough Flame-Retardant Polylactide Composite through Reactive Blending with Ethylene-Acrylic Ester-Glycidyl Methacrylate Terpolymer and Addition of Aluminum Hypophosphite. ACS OMEGA 2017; 2:1886-1895. [PMID: 31457549 PMCID: PMC6641001 DOI: 10.1021/acsomega.7b00162] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Accepted: 04/25/2017] [Indexed: 06/02/2023]
Abstract
Biocompatible and biodegradable polylactide (PLA) composites with supertough mechanical property and sufficient flame retardancy were fabricated by employing a facile approach involving reactive blending of PLA and ethylene-acrylic ester-glycidyl methacrylate terpolymer (EGMA), with the addition of aluminum hypophosphite (AHP) as an effective flame retardant. In consideration of the balance between mechanical property and flame retardancy, the optimal formula was taking a PLA/EGMA 80/20 blend (supertough STPLA) as the matrix and adding 20 wt % of AHP (relative to the mass of STPLA) as the flame retardant, coded as STPLA/20AHP. The mechanical property test showed that for STPLA/20AHP the elongation at break was increased by about 22 times and the notched Izod impact strength was enhanced by approximately 11 times as compared to those for neat PLA. The flame-retardant property test showed that for STPLA/20AHP the limiting oxygen index value reached 26.6% and the UL-94 V0 rating test was passed. Thermogravimetric analysis, microscale combustion calorimetry, and cone calorimeter were further applied to reveal the thermal stability and combustion behaviors of STPLA/xAHP, respectively, where x indicated the mass content of AHP in percentage. The phase separation morphology, dispersion of AHP particles in STPLA matrix, and fracture surfaces and char residues after flame burning were examined by phase contrast optical microscopy and scanning electron microscopy, respectively, which helped comprehend the results obtained from the mechanical property and flame retardancy tests. The supertough STPLA/xAHP, with sufficient flame retardancy as prepared in this work, could have a potential for engineering applications.
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Affiliation(s)
| | | | - Cui Xu
- CAS Key Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, Hefei
National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Qianghua Wu
- CAS Key Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, Hefei
National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhigang Wang
- CAS Key Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, Hefei
National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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21
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Thurber C, Gu L, Myers JC, Lodge TP, Macosko CW. Toughening polylactide with a catalyzed epoxy-acid interfacial reaction. POLYM ENG SCI 2017. [DOI: 10.1002/pen.24527] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Christopher Thurber
- Department of Chemical Engineering and Materials Science; University of Minnesota; Minneapolis Minnesota 55455
| | - Liangliang Gu
- Department of Chemical Engineering and Materials Science; University of Minnesota; Minneapolis Minnesota 55455
| | - Jason C. Myers
- Characterization Facility; University of Minnesota; Minneapolis Minnesota 55455
| | - Timothy P. Lodge
- Department of Chemical Engineering and Materials Science; University of Minnesota; Minneapolis Minnesota 55455
- Department of Chemistry; University of Minnesota; Minneapolis Minnesota 55455
| | - Christopher W. Macosko
- Department of Chemical Engineering and Materials Science; University of Minnesota; Minneapolis Minnesota 55455
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22
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Liu H, Bai H, Bai D, Liu Z, Zhang Q, Fu Q. Design of high-performance poly(l-lactide)/elastomer blends through anchoring carbon nanotubes at the interface with the aid of stereocomplex crystallization. POLYMER 2017. [DOI: 10.1016/j.polymer.2016.11.034] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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23
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Abstract
Upon blending enantiomeric poly(l-lactide) [i.e., poly(l-lactic acid) (PLLA)] and poly(d-lactide) (PDLA) [i.e., poly(d-lactic acid) (PDLA)] or synthesis of stereo block poly(lactide) [i.e., poly(lactic acid) (PLA)], a stereocomplex (SC) is formed. PLA SC has a higher melting temperature (or heat resistance), mechanical performance, and hydrolysis-resistance compared to those of neat PLLA and PDLA. Because of such effects, PLA SC has been extensively studied in terms of biomedical and pharmaceutical applications as well as commodity, industrial, and environmental applications. Stereocomplexation stabilizes and strengthens PLA-based hydrogel or nanoparticles for biomedical applications. Stereocomplexation increases the barrier property of PLA-based materials and thereby prolongs drug release from PLA based materials. In addition, PLA SC is attracting significant attention because it can act as a nucleating agent for the widely used biobased polymer PLLA and thereby the heat resistance of PLLA-based materials can be enhanced. Interestingly, a wide variety of SCs other than PLA SC are found to have been formed in the enantiomeric substituted PLA blends and stereo block substituted PLA polymers. In the present review article, a decade of progress in investigation of PLA SCs is summarized.
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Affiliation(s)
- Hideto Tsuji
- Department of Environmental and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan.
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24
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Liu L, Hou J, Wang L, Zhang J, Duan Y. Role of Dicumyl Peroxide on Toughening PLLA via Dynamic Vulcanization. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b02122] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lu Liu
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao City 266042, Shandong China
| | - Jiarui Hou
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao City 266042, Shandong China
| | - Liping Wang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao City 266042, Shandong 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, Shandong 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, Shandong China
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25
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Arias V, Odent J, Raquez JM, Dubois P, Odelius K, Albertsson AC. Toward "Green" Hybrid Materials: Core-Shell Particles with Enhanced Impact Energy Absorbing Ability. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2016; 4:3757-3765. [PMID: 29503773 PMCID: PMC5828709 DOI: 10.1021/acssuschemeng.6b00397] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 05/19/2016] [Indexed: 06/08/2023]
Abstract
Restrained properties of "green" degradable products drive the creation of materials with innovative structures and retained eco-attributes. Herein, we introduce the creation of impact modifiers in the form of core-shell (CS) particles toward the creation of "green" composite materials. Particles with CS structure constituted of PLA stereocomplex (PLASC) and a rubbery phase of poly(ε-caprolactone-co-d,l-lactide) (P[CL-co-LA]) were successfully achieved by spray droplet atomization. A synergistic association of the soft P[CL-co-LA] and hard PLASC domains in the core-shell structure induced unique thermo-mechanical effects on the PLA-based composites. The core-shell particles enhanced the crystallization of PLA matrices by acting as nucleating agents. The core-shell particles functioned efficiently as impact modifiers with minimal effect on the composites stiffness and strength. These findings provide a new platform for scalable design of polymeric-based structures to be used in the creation of advanced degradable materials.
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Affiliation(s)
- Veluska Arias
- Department
of Fibre and Polymer Technology, KTH Royal
Institute of Technology, SE-100 44, Stockholm, Sweden
| | - Jeremy Odent
- Laboratory
of Polymeric and Composite Materials (LPCM), Center of Innovation
and Research in Materials and Polymers (CIRMAP), University of Mons, Place du Parc 23, B-7000 Mons, Belgium
| | - Jean-Marie Raquez
- Laboratory
of Polymeric and Composite Materials (LPCM), Center of Innovation
and Research in Materials and Polymers (CIRMAP), University of Mons, Place du Parc 23, B-7000 Mons, Belgium
- Materia Nova, Materials
R & D Center, Parc Initialis, Avenue Copernic 1, B-7000 Mons, Belgium
| | - Philippe Dubois
- Laboratory
of Polymeric and Composite Materials (LPCM), Center of Innovation
and Research in Materials and Polymers (CIRMAP), University of Mons, Place du Parc 23, B-7000 Mons, Belgium
- Materia Nova, Materials
R & D Center, Parc Initialis, Avenue Copernic 1, B-7000 Mons, Belgium
| | - Karin Odelius
- Department
of Fibre and Polymer Technology, KTH Royal
Institute of Technology, SE-100 44, Stockholm, Sweden
| | - Ann-Christine Albertsson
- Department
of Fibre and Polymer Technology, KTH Royal
Institute of Technology, SE-100 44, Stockholm, Sweden
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26
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Tsuji H. WITHDRAWN: PLA Stereocomplexes: A Decade of Progress. Adv Drug Deliv Rev 2016:S0169-409X(16)30009-6. [PMID: 26785171 DOI: 10.1016/j.addr.2015.12.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 12/31/2015] [Indexed: 12/16/2022]
Abstract
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy.
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Affiliation(s)
- Hideto Tsuji
- Department of Environmental and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan.
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27
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Dai J, Bai H, Liu Z, Chen L, Zhang Q, Fu Q. Stereocomplex crystallites induce simultaneous enhancement in impact toughness and heat resistance of injection-molded polylactide/polyurethane blends. RSC Adv 2016. [DOI: 10.1039/c6ra00051g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
A promising strategy for the manufacture of super-toughened and heat-resistant PLLA/elastomer blends by using practical melt processing technology with the aid of stereocomplex crystallites is presented.
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Affiliation(s)
- Jia Dai
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Hongwei Bai
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Zhenwei Liu
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Liang Chen
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Qin Zhang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Qiang Fu
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
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28
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Wang K, Pang Y, Huang P, Zhang L, Liu W, Zheng W. Application of supercritical CO2 as the processing medium to tune impact fracture behavior of polypropylene/poly(ethylene-co-octene) blends. RSC Adv 2016. [DOI: 10.1039/c6ra24547a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The new approach of applying scCO2 as a processing medium was proven effective in tuning the fracture behavior of PP/POE blends.
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Affiliation(s)
- Kun Wang
- Ningbo Key Laboratory of Polymer Materials
- Polymers and Composites Division
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Yongyan Pang
- Ningbo Key Laboratory of Polymer Materials
- Polymers and Composites Division
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Pengke Huang
- Ningbo Key Laboratory of Polymer Materials
- Polymers and Composites Division
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Lihua Zhang
- Ningbo Key Laboratory of Polymer Materials
- Polymers and Composites Division
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Wei Liu
- Ningbo Key Laboratory of Polymer Materials
- Polymers and Composites Division
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Wenge Zheng
- Ningbo Key Laboratory of Polymer Materials
- Polymers and Composites Division
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
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29
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Wang J, Wu H, Guo S. Realizing simultaneous reinforcement and toughening in polypropylene based on polypropylene/elastomer via control of the crystalline structure and dispersed phase morphology. RSC Adv 2016. [DOI: 10.1039/c5ra24758f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Realizing simultaneous reinforcement and toughening in polypropylene based on polypropylene/elastomer via controlling crystalline structure and dispersed phase morphology.
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Affiliation(s)
- Jianfeng Wang
- The State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, China
| | - Hong Wu
- The State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, China
| | - Shaoyun Guo
- The State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, China
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30
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Arias V, Odelius K, Höglund A, Albertsson AC. Homocomposites of Polylactide (PLA) with Induced Interfacial Stereocomplex Crystallites. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2015; 3:2220-2231. [PMID: 26523245 PMCID: PMC4613739 DOI: 10.1021/acssuschemeng.5b00498] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 07/28/2015] [Indexed: 06/05/2023]
Abstract
The demand for "green" degradable composite materials increases with growing environmental awareness. The key challenge is achieving the preferred physical properties and maintaining their eco-attributes in terms of the degradability of the matrix and the filler. Herein, we have designed a series of "green" homocomposites materials based purely on polylactide (PLA) polymers with different structures. Film-extruded homocomposites were prepared by melt-blending PLA matrixes (which had different degrees of crystallinity) with PLLA and PLA stereocomplex (SC) particles. The PLLA and SC particles were spherical and with 300-500 nm size. Interfacial crystalline structures in the form of stereocomplexes were obtained for certain particulate-homocomposite formulations. These SC crystallites were found at the particle/matrix interface when adding PLLA particles to a PLA matrix with d-lactide units, as confirmed by XRD and DSC data analyses. For all homocomposites, the PLLA and SC particles acted as nucleating agents and enhanced the crystallization of the PLA matrixes. The SC particles were more rigid and had a higher Young's modulus compared with the PLLA particles. The mechanical properties of the homocomposites varied with particle size, rigidity, and the interfacial adhesion between the particles and the matrix. An improved tensile strength in the homocomposites was achieved from the interfacial stereocomplex formation. Hereafter, homocomposites with tunable crystalline arrangements and subsequently physical properties, are promising alternatives in strive for eco-composites and by this, creating materials that are completely degradable and sustainable.
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31
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Chen Y, Chen K, Wang Y, Xu C. Biobased Heat-Triggered Shape-Memory Polymers Based on Polylactide/Epoxidized Natural Rubber Blend System Fabricated via Peroxide-Induced Dynamic Vulcanization: Co-continuous Phase Structure, Shape Memory Behavior, and Interfacial Compatibilization. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b02195] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yukun Chen
- The
Key Laboratory of Polymer Processing Engineering, Ministry of Education,
China, South China University of Technology, Guangzhou 510640, China
| | - Kunling Chen
- The
Key Laboratory of Polymer Processing Engineering, Ministry of Education,
China, South China University of Technology, Guangzhou 510640, China
| | - Youhong Wang
- The
Key Laboratory of Polymer Processing Engineering, Ministry of Education,
China, South China University of Technology, Guangzhou 510640, China
| | - Chuanhui Xu
- The
Key Laboratory of Polymer Processing Engineering, Ministry of Education,
China, South China University of Technology, Guangzhou 510640, China
- School
of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
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32
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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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33
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Wang XF, Zhang ZX, Li JL, Yang JH, Wang Y, Zhang JH. Largely improved fracture toughness of an immiscible poly(l-lactide)/ethylene-co-vinyl acetate blend achieved by adding carbon nanotubes. RSC Adv 2015. [DOI: 10.1039/c5ra11192g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Through the bridging effect of CNTs, the fracture toughness of the immiscible PLLA/EVA blend was greatly improved.
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Affiliation(s)
- Xiong-fei Wang
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education of China
- Chengdu 610031
| | - Zhi-xing Zhang
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education of China
- Chengdu 610031
| | - Jia-le Li
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education of China
- Chengdu 610031
| | - Jing-hui Yang
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education of China
- Chengdu 610031
| | - Yong Wang
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education of China
- Chengdu 610031
| | - Ji-hong Zhang
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education of China
- Chengdu 610031
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