Adhesion between polymer surface modified by graft polymerization and tissue during surgery using an ultrasonically activated scalpel device

2014 ◽  
Vol 131 (20) ◽  
pp. n/a-n/a ◽  
Author(s):  
Kwangwoo Nam ◽  
Takuya Iwata ◽  
Tsuyoshi Kimura ◽  
Hiroki Ikake ◽  
Shigeru Shimizu ◽  
...  
Keyword(s):  
Graft Polymerization ◽  
Polymer Surface ◽  
Ultrasonically Activated Scalpel ◽  
Surface Modified

scholarly journals Studies on Modification of Surface Properties in Polycarbonate (PC) Film Induced by DC Glow Discharge Plasma

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
K. A. Vijayalakshmi ◽  
M. Mekala ◽  
C. P. Yoganand ◽  
K. Navaneetha Pandiyaraj
Keyword(s):  
Contact Angle ◽  
Glow Discharge ◽  
Plasma Treatment ◽  
Polymer Surface ◽  
Peel Test ◽  
Glow Discharge Plasma ◽  
Polar Component ◽  
Air Plasma ◽  
Modified Surface ◽  
Surface Modified

The polycarbonate film (PC) surface was treated using glow discharge low-pressure air plasma. The modified surface was characterized by contact angle, FTIR, XRD, AFM, and XPS analysis. The surface-modified samples were further investigated using T-peel test for technical applications. The surface energy of the sample was estimated by measuring contact angle. The results show that, after plasma treatment, the root mean square (RMS) roughness of PC film was gradually increased with exposure time. Plasma treatment modified the chemical composition of the polymer surface and it made the surface to be highly hydrophilic. It was found that the air plasma treatment increases the polar component of PC film.

PET Fiber Surface Modified with Amine Group

2014 ◽  
Vol 1081 ◽  
pp. 249-253
Author(s):  
Guo Liang Dai ◽  
Mei Wu Shi ◽  
Hong Xiao
Keyword(s):  
Chemical Structure ◽  
Graft Polymerization ◽  
Moisture Absorption ◽  
Fiber Surface ◽  
Amine Group ◽  
Excellent Performance ◽  
Reactive Groups ◽  
Pet Fibers ◽  
Amine Groups ◽  
Surface Modified

PET material has excellent performance and its modification of biocompatibility had been concerned for researchers. In this paper, graft polymerization of acrylamide on PET fiber by co-irradiation was investigated, and then treated in 5% available chlorine content of NaClO solution, which make the amide groups on the PET fiber surface into amine groups, and provide the reactive groups for further functional modification. The results showed that the moisture absorption of PET fiber increases after the grafting of acrylamide, and its hygroscopicity increases with the increase of grafting yields; after the amide groups converted into the amine groups, the hygroscopicity of PET fibers decreases. The chemical structure and surface morphology of PET fiber and modified products were characterized by ATR-FTIR and SEM, which certified that acrylamide had been successfully grafted on PET fibers and the amide groups on its surface had been converted into the amine groups.

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