文献类型：期刊文献

中文题名：基于100%可再生聚三亚甲基醚二元醇聚氨酯水凝胶的合成与性能

英文题名：Synthesis and Properties of Polyurethane Hydrogels Based on 100% Renewably-Sourced Poly(trimethylene ether) Glycol

作者：刁森森[1];阮朦梦[1];王贵友[1]

机构：[1]华东理工大学材料科学与工程学院上海市先进聚合物材料重点实验室,上海200237

年份：2018

卷号：31

期号：4

起止页码：330

中文期刊名：功能高分子学报

外文期刊名：Journal of Functional Polymers

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

基金：杜邦中国集团有限公司资助项目

语种：中文

中文关键词：聚氨酯;聚乙二醇;聚三亚甲基醚二元醇;水凝胶;溶胀性能

外文关键词：polyurethane; polyethylene glycol; poly （trimethylene ether） glycol; hydrogels; swelling properties

摘要：采用100%可再生聚三亚甲基醚(PO3G)和聚乙二醇等与1,6-己基二异氰酸酯(HDI)反应合成了不同PO3G含量的聚氨酯(PU)水凝胶。利用傅里叶转变红外光谱(FT-IR)、差示扫描量热(DSC)、动态热机械分析(DMA)、流变仪、扫描电镜(SEM)和力学性能测试等手段研究了PO3G含量对PU水凝胶结构与性能的影响。结果表明:随着PO3G质量分数的降低,PU的玻璃化转变温度升高,PU软段的结晶能力提高,PU的吸水溶胀度增加,初级溶胀行为由Fickian扩散转向non-Fickian扩散,PU水凝胶的储能模量和损耗模量均降低。随着PO3G质量分数增加,PU及其水凝胶的拉伸强度均显著增加。
A new kind of polyurethane（PU）hydrogels have been prepared based on 100% renewablysourced poly（trimethylene ether）glycol（PO3 G）.The formed PU hydrogels could meet the requirement of sustainability and development of polyurethane materials,and also broaden the application of 100%renewably-sourced PO3 G.A series of PU hydrogels with different PO3 G mass fractions were synthesized by a two-step process.Firstly,the reaction of PO3 G and poly（ethylene glycol）（PEG）with 1,6-diisocyanatohexane（HDI）produced —NCO groups terminated prepolymer,which reacted with 1,4-butanediol further and provided the PU hydrogel.The effects of PO3 G content on the structure and properties of PU hydrogels were studied by Fourier Transform Infrared spectrometer（FT-IR）,Differential Scanning Calorimeter（DSC）,Dynamic Thermomechanical Analysis（DMA）,rheometer,Scanning Electron Microscope（SEM）and measurement of mechanical properties.The results showed that with the decrease of PO3 G mass fraction from 80%to 0,the glass transition temperature of PU increased from-55 ℃to-29 ℃,and the crystallinability of soft segments in the PU was enhanced.The swelling ratio of PU increased from 5%to 394%,and the primary swelling behavior of PU hydrogels transited from the Fickian to non-Fickian diffusion.Both the storage modulus and loss modulus of PU hydrogels decreased due to the fact that the water absorption ratio of PU increased when PO3 G mass fraction decreased.However,the tensile strength of PUs and PU hydrogels increased significantly with the increase of PO3 Gcontent in the PU.