NMR Study of the Radiation-Induced Cross-Linking of Poly(tetrafluoroethylene-co-perfluoromethyl vinyl ether)

1997 ◽  
Vol 30 (26) ◽  
pp. 8101-8108 ◽  
Author(s):  
J. S. Forsythe ◽  
D. J. T. Hill ◽  
A. L. Logothetis ◽  
T. Seguchi ◽  
A. K. Whittaker
2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Markus Schmid ◽  
Tobias Konrad Prinz ◽  
Kerstin Müller ◽  
Andreas Haas

Casted whey protein films exposed to ultraviolet irradiation were analyzed for their cross-linking properties and mechanical and barrier performance. Expected mechanical and barrier improvements are discussed with regard to quantification of the cross-linking in the UV-treated whey protein films. Swelling tests were used to determine the degree of swelling, degree of cross-linking, and cross-linking density. When the UV radiation dosage was raised, a significant increase of the tensile strength as well as an increase in Young’s modulus was observed. No significant changes in water vapor and oxygen barrier properties between the UV-treated films and an untreated reference sample could be observed. The cross-linking density and the degree of cross-linking significantly increased due to UV radiation. Combined results indicate a disordered protein network in cast films showing locally free volume and therefore only minor mechanical and barrier improvements.


1990 ◽  
Vol 23 (4) ◽  
pp. 977-981 ◽  
Author(s):  
Fumitaka Horii ◽  
Qingren Zhu ◽  
Ryozo Kitamaru ◽  
Hitoshi Yamaoka

1964 ◽  
Vol 2 (1) ◽  
pp. 143-149 ◽  
Author(s):  
Michael A. Bonin ◽  
Mary Louise Calvert ◽  
W. Lamar Miller ◽  
Ffrancon Williams

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