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- Title
Preparation and intermolecular interaction of bio-based elastomer/hindered phenol hybrid with tunable damping properties.
- Authors
Xinxin Zhou; Lesi Cai; Weiwei Lei; He Qiao; Chaohao Liu; Xiuying Zhao; Jianfeng Chen; Runguo Wang; Liqun Zhang
- Abstract
In this research, crosslinked hybrids of a newly invented bio-based elastomer poly(di-isoamyl itaconate-co-isoprene) (PDII) and 3,9-bis[1,1-dimethyl-2{β-(3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy}ethyl]-2,4,8,10-tetraoxaspiro[5,5]-undecane (AO-80) were designed and prepared by the mechanical kneading of the PDII/AO-80 hybrids at a temperature higher than the melting point of AO-80, followed by the crosslinking of PDII during the subsequent hot-pressing/vulcanization process. The micro-structure, morphology, and mechanical properties of the hybrids were systematically investigated in each preparation stage by using DSC, FTIR, XRD, SEM, DMTA, and tensile testing. Part of the AO-80 molecules formed an AO-80-rich phase, but most of them dissolved in the PDII to form a very fine dispersion in amorphous form. The results of FTIR and DSC indicated that strong intermolecular interactions were formed between the PDII and the AO-80 molecules. Each PDII/AO-80 crosslinked hybrid showed a single transi- tion with a higher glass transition temperature and significantly higher loss value (tan δ) than the neat PDII because of intermolecular interactions between the PDII and the AO-80 molecules. For instance, tan d of PDII/AO-80 consisting of 100 phr AO-80 achieved 2.6 times as neat PDII. The PDII/AO-80 crosslinked hybrids with applicability at room temperature are potential bio-based damping materials for the future.
- Subjects
CHEMICAL sample preparation; INTERMOLECULAR interactions; ELASTOMERS; PHENOLS; CROSSLINKING (Polymerization)
- Publication
Pure & Applied Chemistry, 2015, Vol 87, Issue 8, p767
- ISSN
0033-4545
- Publication type
Article
- DOI
10.1515/pac-2014-1207