摘要
降解淀粉和酚类在辣根过氧化物酶(HRP)/H2O2的催化作用下进行自由基接枝共聚反应,制备了淀粉和酚类接枝共聚物。研究了淀粉降解程度、酚类单体配比、HRP用量、反应温度和pH对接枝改性淀粉结构与性能的影响。研究结果表明,用α-淀粉酶降解后的淀粉15与12g间苯三酚(PG)和20g对羟基苯磺酸钠(HBS)在5mg HRP/H2O2引发体系下,在30℃及pH值为7.0时反应5h制备的酚类与淀粉接枝共聚物具有较好的性能,其水溶液的表面张力为26.6mN/m,所鞣制皮革收缩温度(Ts)达到了78℃。用FT-IR、1 H NMR、UV-Vis和GPC等方法对产物的化学结构进行了表征。
A graft copolymer was synthesized by means of radical copolymerization of phloroglucinol（PG）,hydroxyl benzene sulfonic acid sodium（HBS） and degraded starch which was degraded by α-amylase and the graft copolymerization was catalyzed by horseradish peroxidase（HRP）/H2O2.It was investigated the effects of degradation degree of starch,monomer ratio of phenols,the dosage of HRP,polymerization temperature and pH value on structure and properties of modified starch.The optimum reaction conditions were obtained as follows： mass ratio of PG to HBS 12∶20,15g starch which was degraded by α-amylase,polymerization 30℃ pH 7.0 and 5mg of HRP solution.The surface tension of modified starch solution was 26.6mN/m and the shrinkage temperature（Ts） of tanned leather reached 78℃.Meanwhile the chemical structure of the graft copolymer was characterized by FT-IR,1H-NMR,UV-Vis and GPC.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2012年第2期159-162,共4页
Journal of Functional Materials
基金
国家自然科学基金资助项目(20876091)
陕西省自然科学基金资助项目(SJ08B06)
