title: Crosslinked bicontinuous biobased PLA/NR blends via dynamic vulcanization using different curing systems.
abstract: In this study, blends of entirely biosourced polymers, namely polylactide (PLA) and natural rubber (NR), were prepared through dynamic vulcanization using dicumyl peroxide (DCP), sulphur (S) and phenolic resin (2402) as curing agents, respectively. The crosslinked NR phase was found to be a continuous structure in all the prepared blends. The molecular weight changes of PLA were studied by gel permeation chromatography. Interfacial compatibilization between PLA and NR was investigated using Fourier transform infrared spectroscopy and scanning electron microscopy. The thermal properties of blends were evaluated by differential scanning calorimetry and thermogravimetric analysis instrument. It was found that the molecular weight of PLA and interfacial compatibilizaion between PLA and NR showed a significant influence on the mechanical and thermal properties of blends. The PLA/NR blend (60/40 w/w) by DCP-induced dynamic vulcanization owned the finest mechanical properties and thermal stability.
authors.affiliation: The Key Laboratory of Polymer Processing Engineering, Ministry of Education, China (South China University of Technology), Guangzhou 510640, China.
authors.forename: Daosheng
authors.initials: D
authors.lastname: Yuan
authors.affiliation: The Key Laboratory of Polymer Processing Engineering, Ministry of Education, China (South China University of Technology), Guangzhou 510640, China.
authors.forename: Kunling
authors.initials: K
authors.lastname: Chen
authors.affiliation: 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. Electronic address: xuhuiyee@gxu.edu.cn.
authors.forename: Chuanhui
authors.initials: C
authors.lastname: Xu
authors.affiliation: The Key Laboratory of Polymer Processing Engineering, Ministry of Education, China (South China University of Technology), Guangzhou 510640, China.
authors.forename: Zhonghua
authors.initials: Z
authors.lastname: Chen
authors.affiliation: The Key Laboratory of Polymer Processing Engineering, Ministry of Education, China (South China University of Technology), Guangzhou 510640, China. Electronic address: cyk@scut.edu.cn.
authors.forename: Yukun
authors.initials: Y
authors.lastname: Chen
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry*; D005557:Formaldehyde / Q000737:chemistry; D010636:Phenols / Q000737:chemistry; D011091:Polyesters / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D012408:Rubber / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D001672:Biocompatible Materials; D010636:Phenols; D011091:Polyesters; D011108:Polymers; D005557:Formaldehyde; C033616:poly(lactide); C011529:phenol-formaldehyde resin; D012408:Rubber
keywords: Blends; Curing of polymers; Mechanical properties; Morphology