Kinetics of radiation-induced grafting of 2-hydroxyethyl methacrylate onto chloroprene rubber membrane and computer verification

✍ Scribed by Yue-e, Fang; Jun, Ji; Xiaohua, Chang; Li, Sun

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 86 KB
• Volume: 48
• Category: Article
• ISSN: 0959-8103
• DOI: 10.1002/(sici)1097-0126(199911)48:11<1129::aid-pi274>3.0.co;2-#

✦ Synopsis

Grafting of 2-hydroxyethyl methacrylate(HEMA) onto chloroprene rubber(CR) membrane was carried out in ethanol by direct cobalt-60 gamma ray irradiation. The kinetics of the grafting reaction was studied in respect of concentration of monomer, dose rate and temperature. The experimental results show that the functional relationship equation is dg 0 /dt = k[M] 1.5 D .

. The apparent activation energy and collision frequency factor of the grafting polymerization are 46.2 kJ mol À1 and 4.98 Â 10 7 mg cm À2 kGy À1 mol À1.5 litre 1.5 , respectively. The work established the relationship of the initial grafting rate (dg 0 /dt) with various effect factors: ln (dg 0 dt) = 17.7 À 5560(1/T) 1.5 ln [M] ln D . . This equation is also veri®ed for the ®rst time by a software named SMR, which function is using multiple linear regression to calculate the regression coef®cient of a linear equation.