TY - JOUR
T1 - Melt synthesis and characterization of aliphatic low-Tg polyesters as pressure sensitive adhesives
AU - Ozturk, Gozde I.
AU - Pasquale, Anthony J.
AU - Long, Timothy E.
N1 - Funding Information:
The authors would like to thank the Eastman Chemical Company for financial and technical support. The authors also thank Emmet O’Brien, Jeremy Lizotte, and Mark Peters at Eastman Chemical Company for helpful technical discussions.
PY - 2010/4
Y1 - 2010/4
N2 - Polyesters, which are readily synthesized in the absence of solvent, are excellent candidates for a new generation of pressure sensitive adhesives (PSAs) due to their low cost and potential biodegradability. In this study, linear, all-aliphatic polyesters with low glass transition temperatures (Tg) were synthesized using a solvent-free, environmentally friendly melt polycondensation methodology. Polyesters of various compositions were synthesized from different diol and diester monomers to adjust the glass transition temperature and achieve optimum adhesive properties. Melt polycondensation of an isomeric mixture of dimethyl-1,4-cyclohexane dicarboxylate (DMCD), dimethyl adipate (DMAP), diethylene glycol (DEG), and triethylene glycol (TEG) generated a series of linear low-Tg polyesters. The synthesized polyesters were characterized using size exclusion chromatography (SEC), differential scanning calorimetry (DSC), and 1H NMR spectroscopy. The frequency- and temperature-dependent properties of the low-Tg polyesters were characterized using dynamic mechanical analysis (DMA). The adhesive performance of the polymers was evaluated using tack, peel, and shear strength measurements at ambient humidity and temperature. The low-Tg polyesters exhibited peel and tack properties comparable with commercial acrylic adhesives.
AB - Polyesters, which are readily synthesized in the absence of solvent, are excellent candidates for a new generation of pressure sensitive adhesives (PSAs) due to their low cost and potential biodegradability. In this study, linear, all-aliphatic polyesters with low glass transition temperatures (Tg) were synthesized using a solvent-free, environmentally friendly melt polycondensation methodology. Polyesters of various compositions were synthesized from different diol and diester monomers to adjust the glass transition temperature and achieve optimum adhesive properties. Melt polycondensation of an isomeric mixture of dimethyl-1,4-cyclohexane dicarboxylate (DMCD), dimethyl adipate (DMAP), diethylene glycol (DEG), and triethylene glycol (TEG) generated a series of linear low-Tg polyesters. The synthesized polyesters were characterized using size exclusion chromatography (SEC), differential scanning calorimetry (DSC), and 1H NMR spectroscopy. The frequency- and temperature-dependent properties of the low-Tg polyesters were characterized using dynamic mechanical analysis (DMA). The adhesive performance of the polymers was evaluated using tack, peel, and shear strength measurements at ambient humidity and temperature. The low-Tg polyesters exhibited peel and tack properties comparable with commercial acrylic adhesives.
KW - Adhesion
KW - Aliphatic polyesters
KW - Polyesters
KW - Pressure sensitive adhesives
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U2 - 10.1080/00218460903418303
DO - 10.1080/00218460903418303
M3 - Article
AN - SCOPUS:77951259960
SN - 0021-8464
VL - 86
SP - 395
EP - 408
JO - Journal of Adhesion
JF - Journal of Adhesion
IS - 4
ER -