原位交联羽毛角蛋白杂化膜的制备与性能表征

以羽毛角蛋白粉（FK）、甘油和γ-（2，3-环氧丙氧）丙基三甲氧基硅烷（KH560）为原料，采用浇铸法制备了原位交联的羽毛角蛋白杂化膜。借助FITR、TG、SEM和接触角测试仪等手段对羽毛角蛋白杂化膜的结构和性能进行了分析和表征，同时考察了KH560用量对其力学性能、热稳定性、疏水性的影响。结果表明：在碱性加热条件下，KH560上的环氧基与羽毛角蛋白上的氨基发生了加成反应以及KH560上Si-O-CH₃水解成Si-OH，然后缩合形成Si-O-Si网络结构，从而增强了羽毛角蛋白之间的相互作用力，有效地改善了羽毛角蛋白膜的力学性能、热稳定性和疏水性。

Preparation and properties of in-situ crosslinked feather keratin hybrid films with using γ-glycidoxypropyltrimeth oxysilane as crosslinking agent

The in-situ crosslinked feather keratin-silica hybrid films were successfully prepared by solvent casting in the presence of glycerol and γ-glycidoxypropyltrimethoxysilane (KH560). The structure and properties of the feather keratin-silica hybrid films were characterized by means of FTIR，TG，SEM and contact angle tests. The effect of KH560 amounts on the mechanical properties，thermal stability and the surface and bulk hydrophobicity was investigated. The results showed that in thermal and alkaline processed conditions, KH560 reacted onto feather keratin chains through the amino-oxirane addition reaction. Simultaneously the methoxysilane groups (Si-O-CH₃) hydrolyzed to form silanol groups (Si-OH) and the condensation reaction of the silanol group (Si-OH) would form Si-O-Si linkages to result in a crosslinked structure. The crosslinking treatment improved the mechanical strength，thermal stability and the surface and bulk hydrophobicity.