首页|医疗器械用热塑性弹性体的制备及耐辐照性能

医疗器械用热塑性弹性体的制备及耐辐照性能

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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.
Preparation and radiation resistance of thermoplastic elastomer for medical devices
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-p-methylstyrene)(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.

radiation resistancethermoplastic elastomerradiation sterilizationdynamic vulcanization

刘海洪、罗璐、张袁铖、张晓朦、崔喆、付鹏、庞新厂、刘民英

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郑州大学材料科学与工程学院,河南 郑州 450001

河南省先进尼龙材料及应用重点实验室,河南 郑州 450001

郑州大学产业技术研究院有限公司,河南 郑州 450001

耐辐照性 热塑性弹性体 辐照灭菌 动态硫化

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

2022KJHM003022180035232102230138

2024

化工进展
中国化工学会,化学工业出版社

化工进展

CSTPCD北大核心
影响因子:1.062
ISSN:1000-6613
年,卷(期):2024.43(2)
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