林业工程学报2018，Vol.3Issue(2)：109-115,7.DOI:10.13360/j.issn.2096-1359.2018.02.018
功能性石墨烯/聚乙烯醇复合薄膜的制备与性能
Preparation and properties of functional graphene/polyvinyl alcohol composite films
摘要
Abstract
As one of biodegradable polymers, polyvinyl alcohol(PVA)has great potential applications in packaging because of its special water solubility,film?forming property and excellent adhesion,however,this potential applica?tion is limited by its poor mechanical strength and barrier property.In this paper,a type of graphene/polyvinyl alcohol (rGO/PVA)film with good tensile strength and barrier performances as well as certain electrical conductivity was fabricated by using self?made graphene oxide and vitamin C as a strengthen phase and green reducing agent, respec?tively. The research was focused on the effects of the rGO content(1 wt%,3 wt%,5 wt%,and 7 wt%)on the per?formance of the rGO/PVA composite film. The results showed that the introducing of graphene into the PVA matrix significantly improved the tensile strength,water resistance and oxygen resistance of the PVA based composite films. In addition,the adding of graphene provided the composite certain electrical conductivity. However,the additive dos?age of graphene had a threshold value. With an increase in graphene loading in the rGO/PVA film from 1wt% to 5 wt%, the tensile strength,contact angle of water and electrical conductivity increased gradually,but its water absorp?tion rate and oxygen permeability coefficient decreased gradually. When the dosage of the graphene in the rGO/PVA film increased from 5 wt% to 7 wt%,the previously mentioned improvement was stopped. Therefore, in this study, the graphene loading of 5 wt% was set as the threshold value in the rGO/PVA film fabrication. At this case,the elec?trical conductivity of the composite film,the tensile strength,contact angle of deionized water,water absorption rate, oxygen penetration and oxygen permeability were 4.2×10-5s/cm, 78.02 MPa, 84.9°, 38.9 wt%, 3.96 cm3/(m2· 24h)and 0.902×10-15cm3·cm/(cm2·s·Pa), respectively. The experiment results can provide reference values for the realization of the rGO?reinforced PVA film with high mechanical and barrier properties in packaging industry.关键词
聚乙烯醇/还原氧化石墨烯/复合薄膜/阻隔性能/拉伸性能/导电性能Key words
polyvinyl alcohol/reduced graphene oxide/composite film/barrier properties/tensile strength/electrical conductivity分类
通用工业技术引用本文复制引用
王希,李影,连海兰,陈一鸣,郭露,汪倩,徐长妍..功能性石墨烯/聚乙烯醇复合薄膜的制备与性能[J].林业工程学报,2018,3(2):109-115,7.基金项目
国家自然科学基金项目(31370567) （31370567）
江苏省优势学科建设项目(PAPD) （PAPD）
2017年南京林业大学大学生科技创新项目. （）
