当前位置: X-MOL 学术J. Appl. Polym. Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Influence of gamma irradiation on acrylate-based shape memory polymers in the presence of various crosslinkers
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2023-08-02 , DOI: 10.1002/app.54491
Salah Lotfy 1 , Ahmed A. Basfar 2
Affiliation  

This study investigates the impact of gamma irradiation on acrylate-based shape memory polymers (SMPs) when combined with various crosslinkers. The SMPs were synthesized using butyl acrylate (nBuA) and isobornyl acrylate (IBoA) with different crosslinkers, including polyethylene glycol diacrylate (PEGDA), bisphenol A ethoxylated diacrylate (BPAEDA), and trimethylolpropane triacrylate (TMPTA). The photo-initiation process utilized 2,2 dimethoxy-2-phenylacetophenone (DMPA), followed by gamma radiation crosslinking at absorbed doses ranging from 5 to 300 kGy. The degree of gelation depended on the copolymer composition and irradiation dose, with poly(IBoA-nBuA)-BPAEDA exhibiting the highest gelation degree (99%) and poly(IBoA-nBuA)-TMPTA showing the lowest (86%). Fourier transform infrared spectroscopy analysis confirmed the copolymer structure, while thermal stability was assessed using thermogravimetric analysis and differential scanning calorimetry. Dynamic mechanical analysis analysis of the copolymers revealed significant variations in mechanical properties based on the type of crosslinker, radiation dose, and copolymer composition. Furthermore, the shape memory behavior of the copolymers was examined, demonstrating temperature-dependent storage and loss moduli for crosslinked poly(IBoA-nBuA) copolymers at a radiation dose of 150 kGy. In summary, the findings highlight that gamma irradiation crosslinking and the choice of crosslinkers have a substantial impact on the properties of acrylate-based SMPs.

中文翻译:

各种交联剂存在下伽马射线照射对丙烯酸酯基形状记忆聚合物的影响

本研究研究了伽马射线照射与各种交联剂结合使用时对丙烯酸酯基形状记忆聚合物 (SMP) 的影响。使用丙烯酸丁酯(nBuA)和丙烯酸异冰片酯(IBoA)与不同的交联剂合成SMP,包括聚乙二醇二丙烯酸酯(PEGDA)、双酚A乙氧基化二丙烯酸酯(BPAEDA)和三羟甲基丙烷三丙烯酸酯(TMPTA)。光引发过程利用 2,2 二甲氧基-2-苯基苯乙酮 (DMPA),然后在吸收剂量范围为 5 至 300 kGy 的伽马辐射交联。凝胶化程度取决于共聚物组成和辐射剂量,其中聚(IBoA-nBuA)-BPAEDA 表现出最高的凝胶化度(99%),而聚(IBoA-nBuA)-TMPTA 表现出最低(86%)。傅里叶变换红外光谱分析证实了共聚物结构,同时使用热重分析和差示扫描量热法评估热稳定性。共聚物的动态力学分析表明,根据交联剂类型、辐射剂量和共聚物组成,机械性能存在显着变化。此外,还检查了共聚物的形状记忆行为,证明了交联聚(IBoA-nBuA)共聚物在 150 kGy 辐射剂量下的温度依赖性储能模量和损耗模量。总之,研究结果强调伽马射线辐照交联和交联剂的选择对丙烯酸酯基形状记忆聚合物的性能具有重大影响。共聚物的动态力学分析表明,根据交联剂类型、辐射剂量和共聚物组成,机械性能存在显着变化。此外,还检查了共聚物的形状记忆行为,证明了交联聚(IBoA-nBuA)共聚物在 150 kGy 辐射剂量下的温度依赖性储能模量和损耗模量。总之,研究结果强调伽马射线辐照交联和交联剂的选择对丙烯酸酯基形状记忆聚合物的性能具有重大影响。共聚物的动态力学分析表明,根据交联剂类型、辐射剂量和共聚物组成,机械性能存在显着变化。此外,还检查了共聚物的形状记忆行为,证明了交联聚(IBoA-nBuA)共聚物在 150 kGy 辐射剂量下的温度依赖性储能模量和损耗模量。总之,研究结果强调伽马射线辐照交联和交联剂的选择对丙烯酸酯基形状记忆聚合物的性能具有重大影响。展示了在 150 kGy 辐射剂量下交联聚 (IBoA-nBuA) 共聚物的温度依赖性储能模量和损耗模量。总之,研究结果强调伽马射线辐照交联和交联剂的选择对丙烯酸酯基形状记忆聚合物的性能具有重大影响。展示了在 150 kGy 辐射剂量下交联聚 (IBoA-nBuA) 共聚物的温度依赖性储能模量和损耗模量。总之,研究结果强调伽马射线辐照交联和交联剂的选择对丙烯酸酯基形状记忆聚合物的性能具有重大影响。
更新日期:2023-08-02
down
wechat
bug