Nondegradable polymers polypropylene

Huang, H. and Liu, N.C. 1998. Nondegradative melt functionalization of polypropylene with glycidyl methacrylate. JAppl Polym Sci. 67 1957-1963. 

Gaylord, N. G. and Mishra, M. K. 1983. Nondegradative reaction of maleic anhydride and molten polypropylene in the presence of peroxides. Journal of Polymer Science Letters 21 23-30. Gaylord, N. G. and Mehta, R. 1988. Peroxide-catalyzed grafting of maleic anhydride onto molten polyethylene in the presence of polar organic compounds. Journal of Polymer Science, Part A Polymer Chemistry 26 1189-1198. 

NG Gaylord, MK Mishra. Nondegradative reaction of maleic anhydride and molten polypropylene in the presence of peroxides. J Polymer Sci Polymer Lett 21 22-30, 1983. 

In general, nonabsorbable sutures can retain their tensile strength longer than 2 months [113]. The synthetic polymers used to make nondegradable sutures include polypropylene (PP), polyamides, polyesters such PET and polybutylene terephthalate (PBT), and polyether-ester based on poly(tetramethylene glycol), 1,4-butanediol, and dimethyl terephthalic acid [114]. The base polymer and filament configuration for common nonabsorbable sutures are summarized in Table 8.2. 

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