Citation: Heng-Xue Xiang, Fatemeh Zabihi, Xu-Zhen Zhang, Mei-Fang Zhu. The Crystallization, Melting Behaviors and Thermal Stability of Cross-linked Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) by Octavinyloctasilasesquioxane[J]. Chinese Journal of Polymer Science, ;2018, 36(12): 1353-1360. doi: 10.1007/s10118-018-2157-0 shu

The Crystallization, Melting Behaviors and Thermal Stability of Cross-linked Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) by Octavinyloctasilasesquioxane

a.
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
b.
The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textile, Zhejiang Sci-Tech University, Hangzhou 310018, China

Corresponding author: Mei-Fang Zhu, zhumf@dhu.edu.cn
Received Date: 10 March 2018
Revised Date: 10 April 2018
Accepted Date: 10 May 2018
Available Online: 11 June 2018

A series of cross-linked poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/octavinyloctasilasesquioxane (PHBV/OVS) composites were obtained by a simple melt reactive processing technique. Dicumyl peroxide (DCP) and OVS were employed as a free radical initiator and a cross-linking agent, respectively. The chemical structure of these produced composites were identified by ¹H/¹³C/²⁹Si-nuclear magnetic resonance spectroscopy (¹H/¹³C/²⁹Si-NMR) and Fourier transform infrared spectroscopy (FTIR). The melting behavior, non-isothermal crystallization, spherulite morphology and thermal stability property of PHBV/OVS composites were also investigated. The nucleation behaviors and crystallization rate of PHBV/OVS were significantly enhanced with the formation of cross-linked networks with different side-chains and cross-linking points. The red shift of crystalline peak temperature with addition of a small amount of OVS content evidenced the higher crystalline ability compared with the neat PHBV. However there was a threshold content, beyond which the crystallization rate weakened again. Additionally, the cross-linked structure of PHBV/OVS composites could be adjusted by changing the amount of OVS.
- Biodegradable,
- PHBV,
- Reactive processing,
- Crystallization behavior,
- Composite
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沈阳化工大学材料科学与工程学院沈阳 110142