Synthesis and characterization of novel ABA type poly(Ester-ether) triblock copolymers

被引：13

作者：

Catiker, Efkan ^{[1
]}

Ozturk, Temel ^{[2
]}

Atakay, Mehmet ^{[3
]}

Salih, Bekir ^{[3
]}

机构：

[1] Ordu Univ, Dept Chem, TR-52200 Ordu, Turkey

[2] Giresun Univ, Dept Chem, TR-28200 Giresun, Turkey

[3] Hacettepe Univ, Dept Chem, TR-06800 Ankara, Turkey

来源：

JOURNAL OF POLYMER RESEARCH | 2019年 / 26卷 / 05期

关键词：

Hydrogen transfer polymerization; ABA type triblock copolymer; Macromonomer; Poly(3-hydroxypropionate); Poly(ethylene glycol); End-group modification; Water uptake measurement; FRAGMENTATION CHAIN TRANSFER; RING-OPENING POLYMERIZATION; ONE-STEP SYNTHESIS; TRIARM BLOCK-COPOLYMERS; GRAFT-COPOLYMERS; CLICK CHEMISTRY; POLY(ETHYLENE GLYCOL); CYLINDRICAL BRUSHES; ACRYLIC-ACID; POLYESTERS;

D O I：

10.1007/s10965-019-1778-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Oligomers of poly(3-hydroxypropionate) (P3HP) were synthesized via hydrogen transfer polymerization of acrylic acid. Olefinic end-group of the oligomers were modified through epoxidation and bromination to obtain activated oligomers with epoxy and bromide end-groups, respectively. Terminally hydroxyl oligomeric poly(ethylene glycol) (PEG-1450) was also converted to sodium alkoxide of PEG-1450 through reaction with sodium hydride. Novel ABA type P3HP-b-PEG-b-P3HP triblock copolymers were successfully obtained through simple nucleophilic addition reactions between alkoxy and epoxy/alkyl bromide. Water uptake measurements of the triblock copolymers were calculated. Characterization of the modified oligomers and the triblock copolymers was performed by using FT-IR, H-1-NMR and MALDI-MS analyses. Thermal transitions and degradation features of the copolymers were investigated by using DSC and TGA methods. Spectroscopic and thermal analyses revealed that both end-group modifications and coupling reactions were successfully achieved.

引用

页数：9

共 65 条

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