02083nas a2200241   4500008004100000022001400041245015700055210006900212260000900281300001200290490000700302520118800309653002201497653002301519653002101542653002801563653002301591100002501614700002401639700002701663700002601690856012501716       2025                        eng d  a1060-132500aBio-based poly(isobornyl acrylate)-b-(citronellyl methacrylate) block copolymers by PET-RAFT polymerization: thiol-ene modification and adhesion studies0 aBiobased polyisobornyl acrylatebcitronellyl methacrylate block c  cSEP   a728-7360 v623 a<p>
	In this study, poly(isobornyl acrylate)-b-poly(citronellyl methacrylate) (PIBA-b-PCMA) block copolymers were synthesized with controlled molecular weights and low dispersity using photoinduced electron transfer-reversible addition-fragmentation chain transfer (PET-RAFT) polymerization of isobornyl acrylate (IBA) and citronellyl methacrylate (CMA), both terpene-derived monomers. A series of block copolymers was obtained by varying the chain length of PCMA block. Kinetics study of the polymerization of IBA and CMA using 4-cyano-(((dodecylthio)carbonothioyl)thio)pentanoic acid (CDTPA) as chain transfer agent showed a linear plot of ln[M]0/[M]t vs time indicating first order reaction. Distinct glass transition temperatures were observed for the individual blocks and enhanced thermal stability was seen with increasing PCMA content. Post-polymerization modification of the polymer was demonstrated using thiol-ene reaction with the vinyl group in the pendent citronellyl moiety. Adhesion performance, evaluated through lap shear test on aluminum substrates, showed that the block copolymers achieved peak shear strengths of 1.74 MPa at a 38:62 PIBA:PCMA mole ratio.</p>
10aadhesion strength10aBio-based polymers10ablock copolymers10aPET-RAFT polymerization10aThiol-ene reaction1 aHetkale, Pragati, M.1 aPurohit, Poorvi, M.1 aNair, Kiran, Sukumaran1 aAmbade, Ashootosh, V.  uhttps://library.ncl.res.in/content/bio-based-polyisobornyl-acrylate-b-citronellyl-methacrylate-block-copolymers-pet-raft