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题名: Application of SSA Thermal Fractionation and X-Ray Diffraction to Elucidate Comonomer Inclusion or Exclusion from the Crystalline Phases in Poly(butylene succinate-ran-butylene azelate) Random Copolymers
作者: Arandia, Idoia1, 2; Mugica, Agurtzane1, 2; Zubitur, Manuela3; Iturrospe, Amaia4; Arbe, Arantxa4; Liu, Guoming5; Wang, Dujin5; Mincheva, Rosica6; Dubois, Philippe6; Mueller, Alejandro J.1, 2, 7
关键词: comonomer inclusion ; crystallization ; isodimorphism ; poly (butylene succinate-ran-butylene azelate) random copolymers ; successive self-nucleation and annealing
刊名: JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
发表日期: 2016-11-01
卷: 54, 期:22, 页:2346-2358
收录类别: SCI
英文摘要: Poly(butylene succinate-ran-butylene azelate) random copolyesters were thermally fractionated by successive self-nucleation and annealing (SSA). The samples before and after SSA were analyzed by differential scanning calorimetry (DSC) and X-ray diffraction (WAXS and SAXS). WAXS results indicate that a small degree of comonomer inclusion is present in the crystalline phases that are formed in the copolymers depending on composition: a PBS-like unit cell or/and a PBAz-like unit cell, thus confirming the isodimorphic behavior of the samples. SSA on the other hand demonstrated that the degree of comonomer exclusion during crystallization is far larger than comonomer inclusion, as judged by the increase in fractionation degree with compositions leading to the pseudo-eutectic point. Furthermore, WAXS, SAXS, and SSA results show that the isodimorphic behavior is not highly dependent on kinetic factors, as the degree of comonomer inclusion or exclusion in the samples was not significantly altered by SSA thermal fractionation, a thermal treatment that promotes annealing and molecular segregation of defects to the amorphous regions of the material. (C) 2016 Wiley Periodicals, Inc.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35108
Appears in Collections:工程塑料实验室_期刊论文

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作者单位: 1.Univ Basque Country UPV EHU, Fac Chem, POLYMAT, Paseo Manuel Lardizabal 3, Donostia San Sebastian 20018, Spain
2.Univ Basque Country UPV EHU, Fac Chem, Polymer Sci & Technol Dept, Paseo Manuel Lardizabal 3, Donostia San Sebastian 20018, Spain
3.Univ Basque Country UPV EHU, Polytech Sch, Chem & Environm Engn Dept, Donostia San Sebastian 20018, Spain
4.Univ Basque Country, CSIC, CFM, Ctr Phys Mat, Paseo Manuel Lardizabal 5, San Sebastian 20018, Spain
5.Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
6.Univ Mons UMONS, Ctr Innovat & Res Mat & Polymers CIRMAP, Lab Polymer & Composite Mat, Pl Parc 20, B-7000 Mons, Belgium
7.Ikerbasque, Basque Fdn Sci, Bilbao, Spain
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