Novel eco-friendly random copolyesters of poly(butylene succinate) containing ether-linkages

被引：51

作者：

Gigli, Matteo ^{[1
]}

Lotti, Nadia ^{[1
]}

Gazzano, Massimo ^{[2
]}

Finelli, Lara ^{[1
]}

Munari, Andrea ^{[1
]}

机构：

[1] Univ Bologna, Dipartimento Ingn Civile Ambientale & Mat, I-40131 Bologna, Italy

[2] CNR, Ist Sintesi Organ & Fotoreattivita, I-40126 Bologna, Italy

来源：

REACTIVE & FUNCTIONAL POLYMERS | 2012年 / 72卷 / 05期

关键词：

PBS; Ether-linkages; Random copolymers; Solid-state properties; X-ray diffraction; CRYSTALLIZATION; COPOLYMERS; DEGRADATION; HYDROLYSIS; LIPASE; NMR;

D O I：

10.1016/j.reactfunctpolym.2012.02.013

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Poly(butylene succinate/diglycolate) random copolymers (P(BSxBDGy)) of various compositions were synthesized and characterized from the molecular, thermal, structural and mechanical point of view. All the polymers showed a good thermal stability and at room temperature they appeared as semicrystalline materials. The main effect of copolymerization was a lowering in the crystallinity and a decrease of T-m respect to homopolymers. The dependence of T-m on composition for copolymers with high butylene succinate unit content was well described by Baur's equation. WAXD measurements indicated that two different crystalline phases are present, depending on composition: copolymers with high BS unit content are characterized by PBS crystal phase, whereas those rich in BDG co-units crystallized in PBDG lattice. Amorphous samples showed a monotonic increment of; as the content of BDG units is increased and this can be explained on the basis of interchain interactions, due to the high electronegativity of ether-oxygen atoms. A Fox-type equation was found to fit the T-g data of completely amorphous samples, permitting the extrapolation of pure PBS T-g value for the completely amorphous polymer. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：303 / 310

页数：8

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