Journal article
Helical Crystals in Aliphatic Copolyesters: From Chiral Amplification to Mechanical Property Enhancement
ACS macro letters, v 12(3), pp 369-375
21 Mar 2023
PMID: 36847524
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We demonstrate herein a bottom-up strategy for achieving helical crystals via chiral amplification in copolyesters by incorporating a small amount of (D)-isosorbide into semicrystalline polyester, poly(ethylene brassylate) (PEB). During bulk crystallization of poly(ethylene-co-isosorbide brassylate)s, the molecular chirality of isosorbide in the amorphous region is transferred to PEB crystal chirality and amplified by the formation of right-handed helical crystals. Increasing isosorbide content or reducing crystallization temperature leads to thinner PEB lamellae crystals, strengthening chiral amplification by forming superhelices with a smaller helical pitch. Moreover, the superhelices with smaller helical pitch (larger chiral amplification) endow aliphatic copolyesters with enhanced modulus, strength, and toughness without sacrificing elongation-at-break. The principle outlined here could apply to the design of strong and tough materials.
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Details
- Title
- Helical Crystals in Aliphatic Copolyesters: From Chiral Amplification to Mechanical Property Enhancement
- Creators
- Jing Li - Soochow UniversitySheng Wang - Soochow UniversityHuanjun Lu - Suzhou University of Science and TechnologyYanyan Tu - Soochow UniversityXinhua Wan - Peking UniversityXiaohong Li - Soochow Univ, Coll Chem Chem Engn & Mat Sci, State & Local Joint Engn Lab Novel Funct Polymer M, Suzhou 215123, Peoples R ChinaYingfeng Tu - Soochow UniversityChristopher Y. Li - Drexel University
- Publication Details
- ACS macro letters, v 12(3), pp 369-375
- Publisher
- Amer Chemical Soc
- Number of pages
- 7
- Grant note
- 22231008; 22071167 / National Natural Science Foundation of China; National Natural Science Foundation of China (NSFC)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000939359900001
- Scopus ID
- 2-s2.0-85149114114
- Other Identifier
- 991020145557204721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Polymer Science