Matches in SemOpenAlex for { <https://semopenalex.org/work/W2033504976> ?p ?o ?g. }
Showing items 1 to 100 of
100
with 100 items per page.
- W2033504976 endingPage "2332" @default.
- W2033504976 startingPage "2324" @default.
- W2033504976 abstract "The oxidative and thermo-mechanical degradation of HDPE was studied during processing in an internal mixer under two conditions: totally and partially filled chambers, which provides lower and higher concentrations of oxygen, respectively. Two types of HDPEs, Phillips and Ziegler–Natta, having different levels of terminal vinyl unsaturations were analyzed. Materials were processed at 160, 200, and 240 °C. Standard rheograms using a partially filled chamber showed that the torque is much more unstable in comparison to a totally filled chamber which provides an environment depleted of oxygen. Carbonyl and transvinylene group concentrations increased, whereas vinyl group concentration decreased with temperature and oxygen availability. Average number of chain scission and branching (ns) was calculated from MWD curves and its plotting versus functional groups' concentration showed that chain scission or branching takes place depending upon oxygen content and vinyl groups' consumption. Chain scission and branching distribution function (CSBDF) values showed that longer chains undergo chain scission easier than shorter ones due to their higher probability of entanglements. This yields macroradicals that react with the vinyl terminal unsaturations of other chains producing chain branching. Shorter chains are more mobile, not suffering scission but instead are used for grafting the macroradicals, increasing the molecular weight. Increase in the oxygen concentration, temperature, and vinyl end groups' content facilitates the thermo-mechanical degradation reducing the amount of both, longer chains via chain scission and shorter chains via chain branching, narrowing the polydispersity. Phillips HDPE produces a higher level of chain branching than the Ziegler–Natta's type at the same processing condition." @default.
- W2033504976 created "2016-06-24" @default.
- W2033504976 creator A5007578827 @default.
- W2033504976 creator A5026269324 @default.
- W2033504976 creator A5037747623 @default.
- W2033504976 date "2006-10-01" @default.
- W2033504976 modified "2023-10-15" @default.
- W2033504976 title "Evaluation of Philips and Ziegler–Natta high-density polyethylene degradation during processing in an internal mixer using the chain scission and branching distribution function analysis" @default.
- W2033504976 cites W1967783460 @default.
- W2033504976 cites W1968181877 @default.
- W2033504976 cites W1969942261 @default.
- W2033504976 cites W1977423076 @default.
- W2033504976 cites W1987003899 @default.
- W2033504976 cites W1995756502 @default.
- W2033504976 cites W2004067916 @default.
- W2033504976 cites W2006906351 @default.
- W2033504976 cites W2012137675 @default.
- W2033504976 cites W2042842933 @default.
- W2033504976 cites W2043572851 @default.
- W2033504976 cites W2045041291 @default.
- W2033504976 cites W2045510021 @default.
- W2033504976 cites W2052362808 @default.
- W2033504976 cites W2063209783 @default.
- W2033504976 cites W2070568277 @default.
- W2033504976 cites W2074315094 @default.
- W2033504976 cites W2075039779 @default.
- W2033504976 cites W2078280080 @default.
- W2033504976 cites W2080475015 @default.
- W2033504976 cites W2089621375 @default.
- W2033504976 cites W2168140308 @default.
- W2033504976 cites W2320324288 @default.
- W2033504976 cites W2501530606 @default.
- W2033504976 cites W2764189980 @default.
- W2033504976 doi "https://doi.org/10.1016/j.polymdegradstab.2006.04.005" @default.
- W2033504976 hasPublicationYear "2006" @default.
- W2033504976 type Work @default.
- W2033504976 sameAs 2033504976 @default.
- W2033504976 citedByCount "24" @default.
- W2033504976 countsByYear W20335049762012 @default.
- W2033504976 countsByYear W20335049762013 @default.
- W2033504976 countsByYear W20335049762014 @default.
- W2033504976 countsByYear W20335049762015 @default.
- W2033504976 countsByYear W20335049762018 @default.
- W2033504976 countsByYear W20335049762019 @default.
- W2033504976 countsByYear W20335049762022 @default.
- W2033504976 crossrefType "journal-article" @default.
- W2033504976 hasAuthorship W2033504976A5007578827 @default.
- W2033504976 hasAuthorship W2033504976A5026269324 @default.
- W2033504976 hasAuthorship W2033504976A5037747623 @default.
- W2033504976 hasConcept C127413603 @default.
- W2033504976 hasConcept C158117686 @default.
- W2033504976 hasConcept C161790260 @default.
- W2033504976 hasConcept C178790620 @default.
- W2033504976 hasConcept C181748761 @default.
- W2033504976 hasConcept C185592680 @default.
- W2033504976 hasConcept C188027245 @default.
- W2033504976 hasConcept C192562407 @default.
- W2033504976 hasConcept C206175624 @default.
- W2033504976 hasConcept C2777133900 @default.
- W2033504976 hasConcept C2779751980 @default.
- W2033504976 hasConcept C3044715 @default.
- W2033504976 hasConcept C42360764 @default.
- W2033504976 hasConcept C521977710 @default.
- W2033504976 hasConcept C540031477 @default.
- W2033504976 hasConceptScore W2033504976C127413603 @default.
- W2033504976 hasConceptScore W2033504976C158117686 @default.
- W2033504976 hasConceptScore W2033504976C161790260 @default.
- W2033504976 hasConceptScore W2033504976C178790620 @default.
- W2033504976 hasConceptScore W2033504976C181748761 @default.
- W2033504976 hasConceptScore W2033504976C185592680 @default.
- W2033504976 hasConceptScore W2033504976C188027245 @default.
- W2033504976 hasConceptScore W2033504976C192562407 @default.
- W2033504976 hasConceptScore W2033504976C206175624 @default.
- W2033504976 hasConceptScore W2033504976C2777133900 @default.
- W2033504976 hasConceptScore W2033504976C2779751980 @default.
- W2033504976 hasConceptScore W2033504976C3044715 @default.
- W2033504976 hasConceptScore W2033504976C42360764 @default.
- W2033504976 hasConceptScore W2033504976C521977710 @default.
- W2033504976 hasConceptScore W2033504976C540031477 @default.
- W2033504976 hasIssue "10" @default.
- W2033504976 hasLocation W20335049761 @default.
- W2033504976 hasOpenAccess W2033504976 @default.
- W2033504976 hasPrimaryLocation W20335049761 @default.
- W2033504976 hasRelatedWork W1982036851 @default.
- W2033504976 hasRelatedWork W1992052459 @default.
- W2033504976 hasRelatedWork W2018687967 @default.
- W2033504976 hasRelatedWork W2033504976 @default.
- W2033504976 hasRelatedWork W2044423643 @default.
- W2033504976 hasRelatedWork W2052362808 @default.
- W2033504976 hasRelatedWork W2126705145 @default.
- W2033504976 hasRelatedWork W2137546334 @default.
- W2033504976 hasRelatedWork W2317938634 @default.
- W2033504976 hasRelatedWork W2580580886 @default.
- W2033504976 hasVolume "91" @default.
- W2033504976 isParatext "false" @default.
- W2033504976 isRetracted "false" @default.
- W2033504976 magId "2033504976" @default.
- W2033504976 workType "article" @default.