Matches in SemOpenAlex for { <https://semopenalex.org/work/W2065003845> ?p ?o ?g. }
Showing items 1 to 95 of
95
with 100 items per page.
- W2065003845 endingPage "485" @default.
- W2065003845 startingPage "472" @default.
- W2065003845 abstract "The equilibrium concentration of cyclic trimer in poly(ethylene terephthalate) (pet) melts is calculated by the Jacobson and Stockmayer theory using rotational isomeric state models to describe the conformational statistics of the corresponding linear chains. The Williams and Flory rotational isomeric state model of pet is used for the calculations, together with a model which incorporates structural information made available by a recent study of internal rotation in ethyl formate. This latter model takes into account all the intramolecular interactions within monomeric units by considering interactions that depend on rotations about monads, diads and triads of skeletal bonds. The models define 26244 discrete conformations for the acyclic trimer (CO.C6H4.CO.O.CH2.CH2.O)3. The probability that such a chain will intramolecularly cyclize is calculated by computing the total number of conformations that have terminal atoms in close proximity for ring closure, each conformation being accorded a statistical weight based on molecular structural information relating to low molecular weight analogues and on estimates of the steric and electrostatic attractions and repulsions between non-bonded atoms of the chain. The rotational isomeric state models predict the cyclic trimer content of pet melts at 570 K to be 0.1–0.5% by weight (compared with the experimental value of 1·4%) and they give values of the ratio [〈r2〉0M]∞ of the unperturbed mean-square end-to-end distance of pet to its molecular weight of 0.9–0.6Å2(g mol.wt.)−1 at 303K (compared with the experimental value of 1·0)." @default.
- W2065003845 created "2016-06-24" @default.
- W2065003845 creator A5034727633 @default.
- W2065003845 creator A5036803926 @default.
- W2065003845 date "1970-09-01" @default.
- W2065003845 modified "2023-10-16" @default.
- W2065003845 title "Equilibrium ring concentrations and the statistical conformations of polymer chains: Part 4. Calculation of cyclic trimer content of poly(ethylene terephthalate)" @default.
- W2065003845 cites W1027405286 @default.
- W2065003845 cites W1592718646 @default.
- W2065003845 cites W1971210105 @default.
- W2065003845 cites W1985246569 @default.
- W2065003845 cites W1990351127 @default.
- W2065003845 cites W2007565916 @default.
- W2065003845 cites W2016446475 @default.
- W2065003845 cites W2025851442 @default.
- W2065003845 cites W2030841140 @default.
- W2065003845 cites W2050973942 @default.
- W2065003845 cites W2051715984 @default.
- W2065003845 cites W2057951876 @default.
- W2065003845 cites W2082316434 @default.
- W2065003845 cites W2086483087 @default.
- W2065003845 cites W2087912313 @default.
- W2065003845 cites W2124498939 @default.
- W2065003845 cites W2154056133 @default.
- W2065003845 cites W2161022137 @default.
- W2065003845 cites W2323016495 @default.
- W2065003845 cites W2324443543 @default.
- W2065003845 cites W2328756112 @default.
- W2065003845 cites W2329398431 @default.
- W2065003845 cites W4242700021 @default.
- W2065003845 doi "https://doi.org/10.1016/0032-3861(70)90052-2" @default.
- W2065003845 hasPublicationYear "1970" @default.
- W2065003845 type Work @default.
- W2065003845 sameAs 2065003845 @default.
- W2065003845 citedByCount "20" @default.
- W2065003845 countsByYear W20650038452013 @default.
- W2065003845 countsByYear W20650038452021 @default.
- W2065003845 crossrefType "journal-article" @default.
- W2065003845 hasAuthorship W2065003845A5034727633 @default.
- W2065003845 hasAuthorship W2065003845A5036803926 @default.
- W2065003845 hasConcept C121332964 @default.
- W2065003845 hasConcept C1276947 @default.
- W2065003845 hasConcept C147597530 @default.
- W2065003845 hasConcept C161790260 @default.
- W2065003845 hasConcept C178790620 @default.
- W2065003845 hasConcept C185592680 @default.
- W2065003845 hasConcept C188027245 @default.
- W2065003845 hasConcept C199185054 @default.
- W2065003845 hasConcept C2776403692 @default.
- W2065003845 hasConcept C2778597550 @default.
- W2065003845 hasConcept C2779546866 @default.
- W2065003845 hasConcept C2780378348 @default.
- W2065003845 hasConcept C521977710 @default.
- W2065003845 hasConcept C71240020 @default.
- W2065003845 hasConcept C75079739 @default.
- W2065003845 hasConcept C8010536 @default.
- W2065003845 hasConcept C97355855 @default.
- W2065003845 hasConceptScore W2065003845C121332964 @default.
- W2065003845 hasConceptScore W2065003845C1276947 @default.
- W2065003845 hasConceptScore W2065003845C147597530 @default.
- W2065003845 hasConceptScore W2065003845C161790260 @default.
- W2065003845 hasConceptScore W2065003845C178790620 @default.
- W2065003845 hasConceptScore W2065003845C185592680 @default.
- W2065003845 hasConceptScore W2065003845C188027245 @default.
- W2065003845 hasConceptScore W2065003845C199185054 @default.
- W2065003845 hasConceptScore W2065003845C2776403692 @default.
- W2065003845 hasConceptScore W2065003845C2778597550 @default.
- W2065003845 hasConceptScore W2065003845C2779546866 @default.
- W2065003845 hasConceptScore W2065003845C2780378348 @default.
- W2065003845 hasConceptScore W2065003845C521977710 @default.
- W2065003845 hasConceptScore W2065003845C71240020 @default.
- W2065003845 hasConceptScore W2065003845C75079739 @default.
- W2065003845 hasConceptScore W2065003845C8010536 @default.
- W2065003845 hasConceptScore W2065003845C97355855 @default.
- W2065003845 hasIssue "9" @default.
- W2065003845 hasLocation W20650038451 @default.
- W2065003845 hasOpenAccess W2065003845 @default.
- W2065003845 hasPrimaryLocation W20650038451 @default.
- W2065003845 hasRelatedWork W1986519925 @default.
- W2065003845 hasRelatedWork W2022806624 @default.
- W2065003845 hasRelatedWork W2056468580 @default.
- W2065003845 hasRelatedWork W2086191285 @default.
- W2065003845 hasRelatedWork W2397405551 @default.
- W2065003845 hasRelatedWork W2399487868 @default.
- W2065003845 hasRelatedWork W2408067340 @default.
- W2065003845 hasRelatedWork W2951282513 @default.
- W2065003845 hasRelatedWork W2952371189 @default.
- W2065003845 hasRelatedWork W3004666994 @default.
- W2065003845 hasVolume "11" @default.
- W2065003845 isParatext "false" @default.
- W2065003845 isRetracted "false" @default.
- W2065003845 magId "2065003845" @default.
- W2065003845 workType "article" @default.