Journal
RSC ADVANCES
Volume 6, Issue 70, Pages 65889-65897Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra13495e
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Funding
- National Natural Science Foundation of China (NSFC) [51503217]
- Key Projects in the National Science & Technology Pillar Program of China [2015BAD15B08]
- Ningbo Innovation Project [2015B11003]
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A unique non-planar ring structure 1,4-cyclohexanedicarboxylic acid (CHDA) is introduced to synthesize a poly(butylene adipate-co-butylene 1,4-cyclohexanedicarboxylate) (PBAC) copolyester. The impact of the stereochemistry of CHDA on the structure and properties of PBAC, especially the role of cis-CHDA in tuning the thermal, tensile and elastic properties of PBAC is explored in depth. Instead of considering PBAC as a diblock random copolymer consisting of poly(butylene adipate) (PBA) and poly(butylene 1,4-cyclohexanedicarboxylate) (PBC), our results reveal that PBAC can be considered as a random copolymer consisting of actually three blocks, namely PBA, a PBC unit with only trans-CHDA (trans-PBC), and PBC unit with only cis-CHDA (cis-PBC). The role of cis-CHDA is found to be rigid which initiates a high modulus and strength, and soft which results in a decreased melting temperature and increased elongation at break and elasticity.
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