Stereocomplex Poly(Lactic Acid) Amphiphilic Conetwork Gel with Temperature and pH Dual Sensitivity
Stereocomplex Poly(Lactic Acid) Amphiphilic Conetwork Gel with Temperature and pH Dual Sensitivity
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DOI：
10.3390/polym11121940
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发表时间：
2019-11
期刊：
影响因子：
5
通讯作者：
Jie Wu;Xiaoyu Shi;Zhidan Wang;Fei Song;Wenli Gao;Shouxin Liu
中科院分区：
文献类型：
--
作者：
Jie Wu;Xiaoyu Shi;Zhidan Wang;Fei Song;Wenli Gao;Shouxin Liu
采用开环聚合和自由基共聚的方法合成了一种具有温度和pH双重敏感性的聚乳酸两亲性网络凝胶。采用傅里叶变换红外光谱（FT-IR）、核磁共振氢谱（1H NMR）和X射线衍射（XRD）对水凝胶的化学结构和组成进行了表征。利用数码照片、溶胀率和扫描电镜研究了水凝胶的温度和pH敏感性以及良好的两亲性。用差示扫描量热仪（DSC）和动态粘弹谱仪研究了水凝胶的热稳定性和力学性能。结果表明，该水凝胶具有两亲性、温度和pH敏感性、良好的热稳定性和机械强度。
A novel stereocomplex poly(lactic acid) amphiphilic conetwork gel with temperature and pH dual sensitivity was synthesized by ring-opening polymerization (ROP) and free radical copolymerization. The chemical structure and composition of hydrogel were characterized by Fourier transform infrared spectroscopy (FT-IR), proton nuclear magnetic resonance (1H NMR) and X-ray diffraction (XRD). The temperature and pH sensitivity and good amphiphilicity of hydrogel were studied using digital photos, the swelling ratios and a scanning electron microscope (SEM). The thermal stability and mechanical properties of hydrogel were studied by differential scanning calorimeter (DSC) and dynamic viscoelastic spectrometer. The results indicated that the hydrogel has amphiphilicity, temperature and pH sensitivity, good thermal stability and mechanical strength.