Studies on alternating radical copolymerization: analysis of microstructures of styrene-maleic anhydride, styrene-acrylonitrile, and styrene-methyl methacrylate copolymers by fluorescence spectroscopy

A study on free volume of acrylonitrile-

A study on free volume of acrylonitrile-styrene copolymer and methyl methacrylate-styrene copolymer by using positron annihilation

✍ Chenze Qi; Shuihe Zhang; Yanjie Wu; Yurong Zhong; Dakang Song; Tianmin Wang 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 151 KB 👁 2 views

The o-Ps lifetime 3 and the intensity I 3 of ST-AN copolymers and ST-MMA copolymers have been determined by using the positron annihilation technique. The average free volume hole radius R is estimated according to Tao's and Eldrup's model. The result shows that the average free volume hole size mai