FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1999544136> ?p ?o ?g. }

• W1999544136 endingPage "147" @default.
• W1999544136 startingPage "139" @default.
• W1999544136 abstract "This work is part of a series of papers devoted to the study of LDPE/thermoplastic starch (TPS) blends. In those papers, a starch/glycerol/water suspension was fed to a twin-screw extruder (TSE) and a water-free TPS was prepared in the first half of the TSE. Molten LDPE was added via a single screw extruder added midway on the TSE and the latter half of the TSE was used to prepare the blend. This approach allows for the preparation of TPS with particularly high loadings of glycerol plasticizer. In this paper, the thermal and rheological properties of water-free TPS (glycerol content 29–40%) prepared in the first half of a TSE using the above approach was analyzed. DSC analysis reveals the presence of a glass transition temperature (Tg) below ambient temperature, which indicates the complete gelatinization of starch granules. The Tg decreases from −45.6 to −56.2 °C as glycerol content increases from 29 to 40%. Rheological properties in the shear and oscillation mode were determined on-line from the TSE and by using two oscillatory rheometers, respectively. Time sweep measurements demonstrate that TPS has excellent thermal stability at 150 °C, but becomes unstable at temperatures above 180 °C. The studies indicate, however, that TPS stability is maintained for short time periods at temperatures up to 200 °C. These results are important since they indicate that the potential exists to prepare stable TPS materials at high temperature by maintaining short residence times during processing. The shear viscosity of TPS (at γ̇∼130 s−1) decreases by 20% when the glycerol content is increased from 36 to 40%. Similarly, G′ and G″ decrease as glycerol content increases, with a particularly dramatic reduction around 30% glycerol. This suggests the percolation threshold of the well-plasticized glycerol-rich soft regions. These results concerning the plasticization of starch are critical for morphology control protocols. The shear and oscillation viscosities of TPS (40% glycerol, TPS40) were compared with that of LDPE. It is shown that TPS does not follow the Cox-Merz relation, whereas LDPE measured under similar conditions does. The viscosity ratio of the system TPS40/LDPE is greater than 1 if measured in the dynamic mode, while it is less than 1 if determined from steady shear viscosity values. These results are highly relevant considering the importance of viscosity ratio on the prediction of the morphology of immiscible polymer blends." @default.
• W1999544136 created "2016-06-24" @default.
• W1999544136 creator A5002728767 @default.
• W1999544136 creator A5004720639 @default.
• W1999544136 creator A5017378055 @default.
• W1999544136 date "2004-11-01" @default.
• W1999544136 modified "2023-10-11" @default.
• W1999544136 title "Rheological and thermal properties of thermoplastic starch with high glycerol content" @default.
• W1999544136 cites W1967832130 @default.
• W1999544136 cites W1970297540 @default.
• W1999544136 cites W1971378632 @default.
• W1999544136 cites W1980485369 @default.
• W1999544136 cites W1986689719 @default.
• W1999544136 cites W1988345413 @default.
• W1999544136 cites W1992976849 @default.
• W1999544136 cites W1994909912 @default.
• W1999544136 cites W2014895876 @default.
• W1999544136 cites W2017294500 @default.
• W1999544136 cites W2024661051 @default.
• W1999544136 cites W2027446856 @default.
• W1999544136 cites W2033726897 @default.
• W1999544136 cites W2036485813 @default.
• W1999544136 cites W2038612561 @default.
• W1999544136 cites W2040372567 @default.
• W1999544136 cites W2052401892 @default.
• W1999544136 cites W2067340498 @default.
• W1999544136 cites W2068271226 @default.
• W1999544136 cites W2069893246 @default.
• W1999544136 cites W2070918471 @default.
• W1999544136 cites W2072436786 @default.
• W1999544136 cites W2075837331 @default.
• W1999544136 cites W2077406254 @default.
• W1999544136 cites W2079560563 @default.
• W1999544136 cites W2079641755 @default.
• W1999544136 cites W2089871320 @default.
• W1999544136 cites W2101022411 @default.
• W1999544136 cites W2115037897 @default.
• W1999544136 cites W2147580107 @default.
• W1999544136 cites W2159327228 @default.
• W1999544136 cites W2769215418 @default.
• W1999544136 cites W2914324484 @default.
• W1999544136 doi "https://doi.org/10.1016/j.carbpol.2004.06.002" @default.
• W1999544136 hasPublicationYear "2004" @default.
• W1999544136 type Work @default.
• W1999544136 sameAs 1999544136 @default.
• W1999544136 citedByCount "190" @default.
• W1999544136 countsByYear W19995441362012 @default.
• W1999544136 countsByYear W19995441362013 @default.
• W1999544136 countsByYear W19995441362014 @default.
• W1999544136 countsByYear W19995441362015 @default.
• W1999544136 countsByYear W19995441362016 @default.
• W1999544136 countsByYear W19995441362017 @default.
• W1999544136 countsByYear W19995441362018 @default.
• W1999544136 countsByYear W19995441362019 @default.
• W1999544136 countsByYear W19995441362020 @default.
• W1999544136 countsByYear W19995441362021 @default.
• W1999544136 countsByYear W19995441362022 @default.
• W1999544136 countsByYear W19995441362023 @default.
• W1999544136 crossrefType "journal-article" @default.
• W1999544136 hasAuthorship W1999544136A5002728767 @default.
• W1999544136 hasAuthorship W1999544136A5004720639 @default.
• W1999544136 hasAuthorship W1999544136A5017378055 @default.
• W1999544136 hasConcept C108458091 @default.
• W1999544136 hasConcept C122865956 @default.
• W1999544136 hasConcept C127172972 @default.
• W1999544136 hasConcept C127413603 @default.
• W1999544136 hasConcept C159985019 @default.
• W1999544136 hasConcept C178790620 @default.
• W1999544136 hasConcept C185592680 @default.
• W1999544136 hasConcept C192562407 @default.
• W1999544136 hasConcept C196445361 @default.
• W1999544136 hasConcept C200990466 @default.
• W1999544136 hasConcept C2778958987 @default.
• W1999544136 hasConcept C2779751980 @default.
• W1999544136 hasConcept C2780881558 @default.
• W1999544136 hasConcept C2781247691 @default.
• W1999544136 hasConcept C42360764 @default.
• W1999544136 hasConcept C521977710 @default.
• W1999544136 hasConcept C529335014 @default.
• W1999544136 hasConcept C58968531 @default.
• W1999544136 hasConcept C59061564 @default.
• W1999544136 hasConcept C97103648 @default.
• W1999544136 hasConceptScore W1999544136C108458091 @default.
• W1999544136 hasConceptScore W1999544136C122865956 @default.
• W1999544136 hasConceptScore W1999544136C127172972 @default.
• W1999544136 hasConceptScore W1999544136C127413603 @default.
• W1999544136 hasConceptScore W1999544136C159985019 @default.
• W1999544136 hasConceptScore W1999544136C178790620 @default.
• W1999544136 hasConceptScore W1999544136C185592680 @default.
• W1999544136 hasConceptScore W1999544136C192562407 @default.
• W1999544136 hasConceptScore W1999544136C196445361 @default.
• W1999544136 hasConceptScore W1999544136C200990466 @default.
• W1999544136 hasConceptScore W1999544136C2778958987 @default.
• W1999544136 hasConceptScore W1999544136C2779751980 @default.
• W1999544136 hasConceptScore W1999544136C2780881558 @default.
• W1999544136 hasConceptScore W1999544136C2781247691 @default.
• W1999544136 hasConceptScore W1999544136C42360764 @default.
• W1999544136 hasConceptScore W1999544136C521977710 @default.

• next