STRUCTURAL AND THERMAL STABILIZATIONS OF PVC AND WOOD/PVC COMPOSITES BY METAL STERATES AND ORGANOTIN
Structural and thermal stabilizations of poly(vinyl chloride) (PVC) and wood/PVC (WPVC) composites were studied using lead stearate (PbSt2), calcium/zinc complex (Ca/Zn) stabilizers, and methyl tin mercaptide (MT). Thermal and structural stabilities of PVC and WPVC composites were assessed using FTI...
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doaj-146519785e9f4638bdc3c3cd2c26f8cd2020-11-24T23:41:30ZengNorth Carolina State UniversityBioResources1930-21262011-07-016331153131STRUCTURAL AND THERMAL STABILIZATIONS OF PVC AND WOOD/PVC COMPOSITES BY METAL STERATES AND ORGANOTINKantima ChaochanchaikulVichal RosarpitakProf. Dr. Narongrit SombatsompopStructural and thermal stabilizations of poly(vinyl chloride) (PVC) and wood/PVC (WPVC) composites were studied using lead stearate (PbSt2), calcium/zinc complex (Ca/Zn) stabilizers, and methyl tin mercaptide (MT). Thermal and structural stabilities of PVC and WPVC composites were assessed using FTIR spectrometer, thermogravimetric analysis (TGA) and UV-Vis spectrophotometry. The results indicated that the additions of thermal stabilizers into PVC and WPVC composites could promote the thermal stabilities under both un-aged and thermally aged conditions. The presence of wood particles resulted in increases in polyene and carbonyl sequences during processing and decreases in the decomposition temperature (Td). The presence of wood was found to accelerate the thermal degradation in PVC, and suppressed the efficiencies of the thermal stabilizers used. By increasing the stabilizer dosage, the thermal degradations of PVC and WPVC were moderated. Under thermally aged condition at 177oC, the additions of thermal stabilizer could decrease the increase in yellowness index (YI) and discoloration at different ageing times. In this work, MT was found to be the most suitable and promising stabilizer for PVC and WPVC composites, considering the polyene and carbonyl contents, Td, the shift of derivative thermogravimetric (DTG) curves, and changes in YI value and visual color.www.ncsu.edu/bioresources/BioRes_06/BioRes_06_3_3115_Chaochanchaikul_RS_Struc_Therm_Stab_PVC_Stearates_Sn.pdfPoly(vinyl chloride)Wood flourThermal stabilizerCompositeExtrusion |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kantima Chaochanchaikul Vichal Rosarpitak Prof. Dr. Narongrit Sombatsompop |
spellingShingle |
Kantima Chaochanchaikul Vichal Rosarpitak Prof. Dr. Narongrit Sombatsompop STRUCTURAL AND THERMAL STABILIZATIONS OF PVC AND WOOD/PVC COMPOSITES BY METAL STERATES AND ORGANOTIN BioResources Poly(vinyl chloride) Wood flour Thermal stabilizer Composite Extrusion |
author_facet |
Kantima Chaochanchaikul Vichal Rosarpitak Prof. Dr. Narongrit Sombatsompop |
author_sort |
Kantima Chaochanchaikul |
title |
STRUCTURAL AND THERMAL STABILIZATIONS OF PVC AND WOOD/PVC COMPOSITES BY METAL STERATES AND ORGANOTIN |
title_short |
STRUCTURAL AND THERMAL STABILIZATIONS OF PVC AND WOOD/PVC COMPOSITES BY METAL STERATES AND ORGANOTIN |
title_full |
STRUCTURAL AND THERMAL STABILIZATIONS OF PVC AND WOOD/PVC COMPOSITES BY METAL STERATES AND ORGANOTIN |
title_fullStr |
STRUCTURAL AND THERMAL STABILIZATIONS OF PVC AND WOOD/PVC COMPOSITES BY METAL STERATES AND ORGANOTIN |
title_full_unstemmed |
STRUCTURAL AND THERMAL STABILIZATIONS OF PVC AND WOOD/PVC COMPOSITES BY METAL STERATES AND ORGANOTIN |
title_sort |
structural and thermal stabilizations of pvc and wood/pvc composites by metal sterates and organotin |
publisher |
North Carolina State University |
series |
BioResources |
issn |
1930-2126 |
publishDate |
2011-07-01 |
description |
Structural and thermal stabilizations of poly(vinyl chloride) (PVC) and wood/PVC (WPVC) composites were studied using lead stearate (PbSt2), calcium/zinc complex (Ca/Zn) stabilizers, and methyl tin mercaptide (MT). Thermal and structural stabilities of PVC and WPVC composites were assessed using FTIR spectrometer, thermogravimetric analysis (TGA) and UV-Vis spectrophotometry. The results indicated that the additions of thermal stabilizers into PVC and WPVC composites could promote the thermal stabilities under both un-aged and thermally aged conditions. The presence of wood particles resulted in increases in polyene and carbonyl sequences during processing and decreases in the decomposition temperature (Td). The presence of wood was found to accelerate the thermal degradation in PVC, and suppressed the efficiencies of the thermal stabilizers used. By increasing the stabilizer dosage, the thermal degradations of PVC and WPVC were moderated. Under thermally aged condition at 177oC, the additions of thermal stabilizer could decrease the increase in yellowness index (YI) and discoloration at different ageing times. In this work, MT was found to be the most suitable and promising stabilizer for PVC and WPVC composites, considering the polyene and carbonyl contents, Td, the shift of derivative thermogravimetric (DTG) curves, and changes in YI value and visual color. |
topic |
Poly(vinyl chloride) Wood flour Thermal stabilizer Composite Extrusion |
url |
http://www.ncsu.edu/bioresources/BioRes_06/BioRes_06_3_3115_Chaochanchaikul_RS_Struc_Therm_Stab_PVC_Stearates_Sn.pdf |
work_keys_str_mv |
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