Synthesis and properties of polyethylene and polypropylene containing hydroxylated cyclic units in the main chain

Homo- and copolymerization of 5-ethylidene-2-norbornene with ethylene by [2-C5Me4-4,6-tBu2C6H2O]TiCl2/AliBu3/Ph3CB(C6F5)4 catalyst system and epoxidation of the resulting copolymer

“…The polydispersity is close to 2, which suggests that the polymerization takes place at a single active site [35]. The T g values of the poly(E-co-ENB) samples determined by DSC increase with the increase in the comonomer content, which is similar to the reported results observed for poly(ethylene-co-norbornene)s [11,28] and poly-(ethylene-co-ENB)s [23,25,27,36]. It should be noted that the T g values of the poly(E-co-ENB) samples with high ENB contents obtained by 1/TIBA/B catalyst system are higher (T g ¼ 115.3 and 171.9 C for the samples with 38.2 and 50.5 mol% ENB contents, respectively) than those of similar samples produced by the (tBuNSiMe 2 Flu)TiMe 2 /MAO catalyst system (T g ¼ 130 C for a sample with 49 mol% ENB content) [23] and the Me 2 Si[Ind] 2 ZrCl 2 /MAO catalyst system (T g ¼ 72.6 C for a sample with 37.0 mol% ENB content) [25].…”

“…Copolymerization of ethylene with non-conjugated dienes, such as 4-vinyl-1-cyclohexene [20], 5-vinyl-2-norbornene [16,17,21], and dicyclopentadiene [22], has been reported to produce copolymers with unsaturated carbon-carbon double bond that can be functionalized via various standard chemical reactions. 5-Ethylidene-2-norbornene (ENB) is a relatively cheap norbornene derivative with an additional carbon-carbon double bond (ethylidene) that does not interfere in the polymerization reaction [23][24][25][26][27]. It should thus be a good comonomer for introducing functional groups into the copolymers.…”

Review on the Functional Determinants and Durability of Shape Memory Polymers

“…The list of polymers with SM properties is continuously growing; it includes physically [72][73][74][75][76][77][78] and chemically [79][80][81] cross-linked SMPUs, trans-polyisoprene-based SMPU [82,83], poly(ether ester)s like poly(ethylene oxide)/poly(ethylene terephthalate) copolymers [84][85][86], norbornyl/polyhedral oligomeric silsesquioxane (POSS) copolymers [87,88], poly(methylene-1,3-cyclopentane) and its copolymer with polyethylene [89], styrene/butadiene copolymers [90], thiol-ene/acrylate copolymers [91], polynorbornene [90], polymer networks prepared from poly(ε-caprolactone) (PCL) dimethacrylates [92,93], acrylate-based SMPs [94], (meth)acrylate networks [95,96], cross-linked polyethylene [97], epoxy-based polymers [98][99][100][101] and many others. Moreover, various polymer blends like SMPU/phenoxy resin [102], SMPU/polyvinylchloride (PVC) [103] and several others [104][105][106][107][108][109] have received attention.…”

Synthesis and properties of ethylene‐substituted styrene copolymers

“…25 The copolymer showed a much higher T g (37.5 C) than the other copolymer (À6.5 C) because of the hydrogen connection between its OH groups. The same observation was reported in poly(ethylene-cocyclodiolefin)s. 26…”