分别利用钴-60和高能电子加速器两种辐射源制备聚乙烯醇/纳米纤维素(PVA/CNF)水凝胶。研究了CNF含量、吸收剂量和两种辐射源对PVA/CNF水凝胶的力学性能、溶胀性能、透明性和微观形貌等的影响;并利用Materials studio软件对PVA/CNF水凝胶中分子间氢键相互作用进行了模拟。结果表明,PVA/CNF水凝胶中CNF适宜的含量为0.9%;PVA与CNF分子间氢键相互作用比PVA分子间氢键相互作用强;利用两种辐射源辐射制备的PVA/CNF水凝胶均具有较好的透明性和力学性能,适宜的吸收剂量为30kGy。
Polyvinyl alcohol (PVA) and Cellulose nanofiber (CNF) hydrogels were prepared by 60Co and high energy electron accelerator respectively.The effects of the CNF content,radiation type and absorbed dose on the mechanical properties,swelling behavior,transparency and morphology of PVA/CNF were investigated.Intermolecular hydrogen bond interaction of PVA/CNF hydrogels were studied via Materials studio.Results shown that the preferable CNF content in PVA/CNF hydrogels was 0.9%.Intermolecular hydrogen bond interaction between PVA and CNF was stronger than PVA.The PVA/CNF hydrogels fabricated by both radiation sources had high transparency and mechanical properties.The preferable absorbed dose of PVA/CNF hydrogels was 30kGy.
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基金资助
中原科技创新领军人才项目(194200510030);河南省科学院科研开发专项(190704002);河南省科学院基本科研费(200604056)
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