Year-end Sale % OFF 
Abstract
AbstractMacromonomers of various chain lengths with an average of three allyl double bonds per chain were prepared by anionic copolymerization of allyl methacrylate with methyl methacrylate. The macromonomers were characterized by gel permeation chromatography and nuclear magnetic resonance. The macromonomers were then copolymerized with 1‐vinyl‐2‐pyrrolidone to form three‐dimensional structures. Their optical, swelling and mechanical properties were studied and the crosslinking efficiency was determined. The copolymer properties are not greatly affected by macromonomer chain lengths up to 40‐mers; above 50‐mers there is a slight decrease in the equilibrium water content and a significant increase in the modulus of elasticity. The crosslinking efficiency depends on the macromonomer chain length; a marked increase was observed for the 50‐mer because of a greater number of methyl‐methyl interactions. Copolymers have favourable strength‐strain properties and a low content of water‐soluble extracts, in which the IR analysis demonstrated the presence of 1‐vinyl‐2‐pyrrolidone homopolymers. In spite of the good results obtained for all the macromonomers described in this work, the 50‐mer seems to be optimal for copolymerization with 1‐vinyl‐2‐pyrrolidone.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
