Styrenated sunflower oil polymers from raft process for coating application

Abstract

Oil‐based macroinitiator (MI) obtained from sunflower oil was styrenated using reversible addition–fragmentation chain transfer polymerization (RAFT) in the presence of phenacyl morpholine dithiocarbamate (PMDC) as chain transfer agent. The solvent effect and effect of the molar ratio of the transfer agent, PMDC, on polydispersity and molecular weight of the polymers were investigated. The obtained results showed that, 1,4‐dioxane is a better solvent and 1/4 molar ratio of [MI]/[PMDC] provides relatively low polydispersities. No homopolystyrene was detected under these conditions, indicating the efficiency of PMDC in the chain transfer process. Livingness of the polymerization process was confirmed by chain extension with styrene using the preformed polymer as macrotransfer agent. The film properties of styrenated oil samples were determined according to the related standards. To improve film properties, the polymer obtained by RAFT technique was modified by reaction with MI. The resulting material gave transparent films with good film properties. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

Monomers and Resulting Polymers from Biomass

“…Moving forward, the versatility of vegetable oil feedstocks combined with relatively new polymerizations methods, such as acyclic metathesis polymerizations (ADMET), ring-opening metathesis polymerization (ROMP), ATRP, and RAFT, provides opportunities to meet the need for specialized and novel thermosets and thermoplastics [33,[59][60][61][62]. Lastly, as research in genetically modified organisms continues to develop, there is potential for an upstream increase in purity of fatty acid contents, for an increase in functionalities of fatty acids, and for an increase in production of vegetable oils [3,63].…”

Styrenated urethane oil synthesis via CuAAC “click” chemistry approach

“…It should be emphasized that oil portion of the polymeric structure imparts the flexibility characteristic to the film to overcome the brittleness drawback. Moreover, the combination of oil segment with polystyrene and polyurethane polymers improves the film properties such as short drying time, good alkali, acid and, water resistances [6][7][8][9][10][11][12][13][14].…”

“…In the classical styrenation process, the formation of homopolystyrene leads to weak film properties. A number of studies were previously carried out in our laboratory with respect to avoidance of homopolymer formation in order to improve the film properties of oil-based binders [6][7][8][9][10][11][12][13][14]. In our previous studies, different strategies were employed to insert St segment into the oil structure.…”

“…In our previous studies, different strategies were employed to insert St segment into the oil structure. One of these strategies was the macromonomer technique and the other one was the use of macroinitiator having large oil portion as a soft segment [7][8][9][10][11][12]. Moreover, in addition to vinyl polymer segments, inorganic domains such as vinyl trimethoxysilane, 3-aminopropyltriethoxysilane and titanium isopropoxide were also inserted into the final polymer structure [13,14].…”

“…Even though triglyceride oils cannot be directly used in coating applications, they can be successfully used after applying various modification methods in this field [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. One of the most popular modification techniques is the copolymerization of triglyceride oils with vinyl monomers, most extensively with styrene (St).…”