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Synthesis and characterization of biodegradable aliphatic polyesters using dibutylmagnesium as initiator

Chinese Chemical Letters 2007年第6期18卷 744-746页

作者： Lian Liu Zhi Yong Wei Min Qi Electromechanics and Materials Engineering College Dalian Maritime University Dalian 116026 China School of Materials Science and Engineering Dalian University of Technology Dalian 116024 China

aliphatic polyesters were synthesized via the ring opening polymerization of the corresponding lactones initiated with dibutylmagnesium both in bulk and in solution. The resulting polymers were characterized by 1H, 13C NMR, GPC and XRD. The results indicated that dibutylmagnesium is an effective initiator for the ring opening polymerization of lactones.

关键词： aliphatic polyesters Lactones Dibutylmagnesium Biodegradable Biomaterials

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Synthesis of Cyclic Oligo(ethylene adipate)s and Their Melt Polymerization to Poly(ethylene adipate)

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Chinese Journal of Polymer Science 2017年第9期35卷 1051-1060页

作者： min lu xiang zhu xiao-hong li xiao-ming yang 屠迎锋 Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215123 China

We present here the first synthesis of cyclic oligo（ethylene adipate）s （COEAs） via pseudo-high dilution condensation reaction of adipoyl chloride with ethylene glycol, and the synthesis of corresponding poly（ethylene adipate）（PEA） via the melt polymerization of COEAs. The structure of COEAs was characterized and proved by 1H-NMR and MALDI-TOF mass measurements. The effects of organic base, reaction temperature and the ratio of adipoyl chloride to ethylene glycol on the yield of COEAs were studied, and the optimum reaction condition was revealed. PEA, a diacid and diol based semi-crystalline green aliphatic polyester, was synthesized by the melt polymerization of COEAs using Ti（n-C4H90）4 as catalyst and 1,10-decanediol as initiator at 200 ℃, which follows the polycondensation-coupling ring- opening polymerization method. Our strategy should be applicable to the synthesis of versatile aliphatic polyesters based on diacid and diol monomers, which have potential applications as biocompatible and biodegradable materials.

关键词： Cyclic oligoesters Pseudo-high dilution reaction condition Polycondensation-coupling ring-openingpolymerization aliphatic polyesters

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Ring-Opening Copolymerization of Biorenewable δ-Caprolactone with trans-Hexahydro-(4,5)-benzofuranone toward Closed-Loop Recyclable Copolyesters and Their Application as Pressure- Sensitive Adhesives

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Chinese Journal of Chemistry 2024年第17期42卷 2035-2042页

作者： Haining Niu Liying Wang Zihan Zhang Yalei Liu Yong Shen Zhibo Li State Key Laboratory Base of Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdaoShandong266042China Key Laboratory of Biobased Polymer Materials Shandong Provincial Education DepartmentQingdao University of Science and TechnologyQingdaoShandong266042China

Copolymerization as an efficient strategy can provide an opportunity to create new closed-loop recyclable polymeric materials with tailored properties that are generally inaccessible to the individual *** this contribution,the bulk ring-opening copolymerization of bio-renewable-caprolactone and trans-hexahydro-(4,5)-benzofuranone was achieved to produce closed-loop recyclable copolyesters by using an organobase/urea binary catalyst at room *** obtained copolyesters exhibited composition-dependent thermal ***,the obtained copolyesters were able to depolymerize back to recover the corresponding monomers under mild conditions.

关键词： Recyclable polymers Ring-opening polymerization Copolymerization Pressure-sensitive adhesives aliphatic polyesters

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Synthesis and Characterization of Novel Biodegradable Poly (butylene succinate-co-triethylene glycol succinate)Copolymers

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Journal of Beijing Institute of Technology 2017年第2期26卷 276-284页

作者： Jie Ouyang Hongquan Yin Qingshan Zhang Yunzheng Li Pengjun Yao . School of Chemical Engineering and Environment Beijing Institute of Technology Beijing 100081 China Anhui Sealong Biotechnology Co. Ltd Bengbu Anhui 233316 China

Novel biodegradable aliphatic polyesters,poly（butylene succinate-co-triethylene glycol succinate）（P（BS-co-TEGS））and poly（butylene succinate）（PBS）,were synthesized through a two-step procedure of esterification and polycondensation with succinic acid and1,4-butanediol/triethylene glycol as raw materials as well as tetrabutyl titanate and diphenylphosphinic acid as the *** chemical structure and molecular weight of the copolymers were characterized by 1^H nuclear magnetic resonance（1^H NMR）and gel permeation chromatography（GPC）,*** addition,thermal properties,crystal structure and mechanical properties were also analyzed with various techniques.P（BS-co-TEGS）exhibited more excellent mechanical properties than PBS,especially in elongation at ***,the crystal structure and thermal stability of the P（BS-co-TEGS）have hardly *** crystallinity of P（BS-co-TEGS）was lower than that of PBS and decreased with the increase of mole ratio of triethylene *** the increase of TEGS unit molar composition,the melting point（Tm）,crystallization temperatures（Tc）and heat of fusion（ΔHm）of P（BS-co-TEGS）decreased,while glass transition temperature（Tg）increased.

关键词： aliphatic polyesters polycondesation mechanical properties crystallinity

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半芳香族尼龙改性PBS

半芳香族尼龙改性PBS

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2012年全国高分子材料科学与工程研讨会

作者：孙加明王强姚臻曹堃浙江大学化工系聚合与聚合物工程研究所浙江大学化学工程国家重点实验室

＜正＞可降解聚酯高分子材料近年来倍受关注,但大部分（如PBS、PLA等）存在热性能、力学性能较差等缺点。而聚酰胺则由于含有酰胺键（CONH）,具有较好的热性能和力学性能,但它们通常难以降解。为了综合脂肪族聚酯和聚酰胺的优点,人们合... 详细信息

＜正＞可降解聚酯高分子材料近年来倍受关注,但大部分（如PBS、PLA等）存在热性能、力学性能较差等缺点。而聚酰胺则由于含有酰胺键（CONH）,具有较好的热性能和力学性能,但它们通常难以降解。为了综合脂肪族聚酯和聚酰胺的优点,人们合成了脂肪族酯-酰胺共聚物（polyester-amides,PEAs）。

关键词： Exchange reaction Chain extension reaction aliphatic polyesters Semi-aromatic polyamide Supercritical carbon dioxide

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