N-Propyl acrylate

PPA PpBrS PpCIS PPeMA PPFE poly(n-propyl acrylate) poly(p-bromostyrene) poly(p-chlorostyrene) poly(n-pentyl methacrylate) polylperfluoro ethers)... 

Fig. 36. TVA thermogram of poly(n-propyl acrylate) at various trap temperatures (—-----) Oand —45°C (--) —75 and —100°C [113],...

Fig. 37. Production of A carbon dioxide, propene and n-propanol during degradation of poly(n-propyl acrylate) [114].

The stracture-property correlation of different copolymers with n-butyl acrylate and isobomyl acrylate units have been studied. The primary goal was to compare thermomechanical properties of block, gradient and statistical copolymers of nBA and IBA with various acrylate homopolymers (Scheme 1). The choice of nBA and IBA was dictated by very different thermal properties of the resulting homopolymers, glass transition temperature (Tg) of PnBA is -54°C while the Tg of PIBA is 94°C. Thus, their copolymerization with carefully selected ratios should result in polymers with thermal properties, i.e., Tg similar to acrylate homopolymers poly(t-butyl acrylate) (PtBA), poly(methyl acrylate) (PMA), poly(ethyl acrylate) (PEA) and poly(n-propyl acrylate) (PPA). 

Abbreviations for Table 2.19 PHMA - poly-n-hexyl methacrylate, STVPh - polystyrene-co-vinylphenol, PFSt - poly(o-fluorostyrene-co-p-fluorostyrene), P(S-co-BrS) - poly(styrene-co-4-bromostyrene), N-TPI - new thermoplastic polyimide , PPrA - poly-n-propyl acrylate, PPeA - poly-n-pentyl acrylate,... 

Many acrylic copolymers are currently used in the textile industry as binders for nonwoven fabrics. The purpose of these fibers is to stabilize the material. In many instances, these copolymers are used in conjunction with amino resins. Casanovas and Rovira have done a study of methyl methacrylate-ethyl acrylate-N-methylol-acrylamide by PY/GC-MS. Among the products identified were methane, ethylene, propene, isobutene, methanol, propionaldehyde, ethanol, ethyl acetate, methyl acrylate, methyl isobutyrate, ethyl acrylate, methyl methacrylate, n-propyl acrylate, and ethyl methacrylate. In this sample, clearly monomer reversion is the primary degradation process occurring however, several other degradation mechanisms are at work. When the sample contains an amino resin in the mixture, acrylonitrile is observed in the pyrogram. Another effect of the amino presence was a marked increase in the amount of methanol detected. Other products detected were meth-oxyhydrazine, methyl isocyanate, and methyl isocyanide. 

Table 3.3 Degradation products and poly(isopro] yields of poly(n-propyl acrylate) and pyl acrylate) ...

With poly-n-propyl acrylate a greater amount of monomer was produced than with the polyisopropyl ester and as expected from the mechanism proposed, the proportion of propane was much lower with the polymeric normal ester compared with amounts of polypropylene from the polymeric isoester. 

Shi, L., Wan, D., and Huang, J. 2000. Controllability of radical copolymerization of maleimide and ethyl a-(n-propyl)acrylate using l,l,2,2-tetraphenyl-l,2-bis(trimethylsilyloxy) ethane as initiator. Journal of Polymer Science, Part A Polymer Chemistry 38 2872-2878. 

Fig. 1. Rate of photopolymerization of 1,6-hexanediol diacrylate (HDDA), di-ethylen ycol diacrylate (DEGDA) and n-propyl acrylate (n-PA) vs. time. Rates are measured as exothermic heat flux. (From Ref. with permission)...

---