医疗器械用热塑性弹性体的制备及耐辐照性能  

Preparation and radiation resistance of thermoplastic elastomer for medical devices

作　　者：刘海洪 罗璐 张袁铖 张晓朦 崔喆[1,2,3] 付鹏 庞新厂[1,2,3] 刘民英 LIU Haihong;LUO Lu;ZHANG Yuancheng;ZHANG Xiaomeng;CUI Zhe;FU Peng;PANG Xinchang;LIU Minying(School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,Henan,China;Henan Provincial Key Laboratory of Advanced Nylon Materials and Applications,Zhengzhou 450001,Henan,China;Zhengzhou University Industrial Technology Research Institute Co.,Ltd.,Zhengzhou 450001,Henan,China)

机构地区：[1]郑州大学材料科学与工程学院,河南郑州450001 [2]河南省先进尼龙材料及应用重点实验室,河南郑州450001 [3]郑州大学产业技术研究院有限公司,河南郑州450001

出　　处：《化工进展》2024年第2期1047-1053,共7页Chemical Industry and Engineering Progress

基　　金：2022年郑州市科技惠民计划(2022KJHM0030);2022年河南省留学人员科研择优资助项目(22180035);2023年度河南省重点研发与推广专项(科技攻关)(232102230138)。

摘　　要：采用具有耐辐照特性的溴化聚(异丁烯-对甲基苯乙烯)(BIMS)为基体橡胶,与苯乙烯-乙烯-丁烯-苯乙烯嵌段共聚物(SEBS)共混,以烷基苯酚二硫化物作为硫化交联剂,并配合一种生物基增塑剂,采用动态硫化工艺,制备了一种医疗器械用耐辐照动态硫化热塑性弹性体(TPV)。通过对不同剂量辐照后TPV的基本理化性质、顶空气相色谱、红外图谱、热稳定性、动态机械性能和力学性能对比分析研究发现,在辐照灭菌(≤40 kGy)后,产品性能未发生变化,可满足常规医疗器械用弹性体制品对耐辐照性能的要求。In this work,a thermoplastic elastomer blend(TPV)with irradiation resistance for medical devices was prepared by the dynamic vulcanization of the blends of brominized poly(isobutene-co-pmethylstyrene)(BIMS)and styrene ethylene butylene styrene copolymer(SEBS).Besides,alkyl phenol disulfide was used as vulcanizing crosslinker and bio-based plasticizer was also added.After irradiated by different doses,basic physicochemical properties,headspace gas chromatography,Fourier transform infrared spectra,thermal stability,dynamic mechanical properties and mechanical properties of irradiated TPV were analyzed.The experimental results indicated that the performance of TPV irradiated within 40kGy dose did not change which met the irradiation resistance requirements of the normal elastomers for medical devices.

关 键 词：耐辐照性 热塑性弹性体 辐照灭菌 动态硫化 

分 类 号：TQ334[化学工程—橡胶工业] R197.39[医药卫生—卫生事业管理]