TY - JOUR
T1 - Polymerizable UV absorbers for the UV stabilization of polyesters. II. Photodegradation study of UV-stabilized PET copolymers
AU - Cormack, Peter A. G.
AU - Erdemli, Omer Can
AU - Sankey, Stephen W.
N1 - Dedicated to Professor Phil Hodge for his outstanding lifetime achievements in organic and polymer chemistry.
PY - 2021/12/10
Y1 - 2021/12/10
N2 - Polymerizable UV absorbing monomers (UVAMs) were copolymerized with bis(hydroxyethyl) terephthalate to yield copolymers of poly(ethylene terephthalate) (PET). PET copolymer films containing 3-[4-(4,6-diphenyl-1,3,5-triazin-2-yl)-3-hydroxyphenoxy]-1,2-propanediol (UVAM 12) and 6,6’-(6-phenyl-1,3,5-triazine-2,4-diyl)bis(3-(2-hydroxyethoxy)phenol) (UVAM 24) were exposed to UV radiation for 1082 hrs. in a QUV-A accelerated weathering instrument and analyzed periodically using FT-IR spectroscopy and GPC. It was found that PET films containing copolymerized UVAMs outperformed films containing admixed Tinuvin 1577 stabilizer, thereby offering even greater protection to polymer films against UV-induced crosslinking and chain scission.
AB - Polymerizable UV absorbing monomers (UVAMs) were copolymerized with bis(hydroxyethyl) terephthalate to yield copolymers of poly(ethylene terephthalate) (PET). PET copolymer films containing 3-[4-(4,6-diphenyl-1,3,5-triazin-2-yl)-3-hydroxyphenoxy]-1,2-propanediol (UVAM 12) and 6,6’-(6-phenyl-1,3,5-triazine-2,4-diyl)bis(3-(2-hydroxyethoxy)phenol) (UVAM 24) were exposed to UV radiation for 1082 hrs. in a QUV-A accelerated weathering instrument and analyzed periodically using FT-IR spectroscopy and GPC. It was found that PET films containing copolymerized UVAMs outperformed films containing admixed Tinuvin 1577 stabilizer, thereby offering even greater protection to polymer films against UV-induced crosslinking and chain scission.
KW - ultraviolet
KW - degradation
KW - poly(ethylene terephthalate)
KW - poly(ethylene isophthalate)
KW - UV absorber
U2 - 10.24820/ark.5550190.p011.617
DO - 10.24820/ark.5550190.p011.617
M3 - Special issue
SN - 1551-7012
SP - 315
EP - 330
JO - Arkivoc
JF - Arkivoc
ER -