仿生矿化聚乙烯醇复合膜材料的制备及其力学性能分析  

Preparation and mechanical property analysis of a biomimetic mineralized polyvinyl alcohol composite film

作　　者：郑智建 张晶晶[1] 孔祥东[1] 赵瑞波[1] ZHENG Zhijian;ZHANG Jingjing;KONG Xiangdong;ZHAO Ruibo(School of Materials Science&Engineering,Zhejiang Sci-Tech University,Hangzhou 310018,China)

机构地区：[1]浙江理工大学材料科学与工程学院,杭州310018

出　　处：《浙江理工大学学报(自然科学版)》2025年第2期175-184,共10页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：浙江省自然科学基金项目(LZ24E020002);国家自然科学基金项目(51902289)。

摘　　要：为了提升聚乙烯醇(Polyvinyl alcohol, PVA)膜材料的力学性能,采用仿生矿化策略引入羧甲基壳聚糖(Carboxymethyl chitosan, CMC)和磷酸钙寡聚体(Calcium phosphate oligomer, CPO),通过有机无机共聚制备新型PVA复合膜材料(PVA/CMC/CPO films, PCC);对PCC膜的形貌、亲疏水性、结晶性、热稳定性、流变性以及力学性能等进行表征,并分析CPO含量对PCC膜材料性质的影响。结果表明:PVA、CMC可诱导CPO矿化形成羟基磷灰石(Hydroxyapatite, HAP)纤维,形成有机无机PVA复合膜材料,有效提高了PAV、CMC和CPO在膜材料内的均匀分布,提高了PCC膜的疏水性、热稳定性,并维持其良好的光透过率(85.3%);掺入24%CPO的PCC膜材料弹性模量可达33.1 MPa,断裂伸长率可达823%。该研究制备的PVA复合膜材料具有良好的力学性能,在功能材料领域具有良好的应用前景。To improve the mechanical properties of polyvinyl alcohol(PVA)films,carboxymethyl chitosan(CMC)and calcium phosphate oligomer(CPO)were introduced by biomimetic mineralization strategy.A novel PVA film(PVA/CMC/CPO film,PCC)was prepared by organic and inorganic copolymerization.The morphology,hydrophilicity,crystallinity,thermal stability,rheology and mechanical properties of PCC films were tested and characterized,and the influence of CPO content on the material properties of the PCC film was studied.The results showed that PVA and CMC induced the mineralization of CPO to form hydroxyapatite(HAP)fibers,resulting in organic and inorganic PVA composite membrane materials.This effectively improved the uniform distribution of PVA,CMC,and CPO within the membrane materials,enhancing the hydrophobicity and thermal stability of the PCC film while maintaining good light transmittance at 85.3%.Notably,the elastic modulus of the PCC film containing 24%CPO reached 33.1 MPa,and the elongation at break reached 823%.The PCC composite film prepared in this study demonstrates good mechanical properties and shows promising application prospects in the field of functional materials.

关 键 词：仿生矿化 有机无机共聚 聚乙烯醇 羧甲基壳聚糖 磷酸钙寡聚体 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]