Synthesis of a thermo- and pH-sensitive comb-type graft copolymer by ionizing radiation

被引：0
作者：
Victor H. Pino-Ramos
Emilio Bucio
机构：
[1] Universidad Nacional Autónoma de México,Departamento de Química de Radiaciones y Radioquímica, Instituto de Ciencias Nucleares
来源：
MRS Communications | 2018年 / 8卷
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学科分类号：
摘要：
A thermo-pH sensitive graft copolymer was successfully obtained by grafting 4-vinylpyridine and N-vinylcaprolactam onto silicone rubber ((SR-g-4VP)-g-NVCL)) in two-step using ionizing radiation as an initiator. Factors such as dose and monomer concentration remarkably affected the grafting yield. Surface grafted films were well characterized by means of infrared-attenuated total reflection, carbon-13 nuclear magnetic resonance, thermogravimetric analysis, and mechanical properties were also studied. Scanning electron microscopy demonstrated that the grafting was superficial; mechanical studies demonstrated that grafting caused loss elongation of SR films. The grafted films showed a critical pH close to physiological pH and a critical temperature (lower critical solution temperature) about 35 °C, therefore, this material presents potential biomedical applications as drug delivery.
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页码：1335 / 1342
页数：7
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