Cargando…

Ordered structure effects on β-nucleated isotactic polypropylene/graphene oxide composites with different thermal histories

In this paper, the influence of ordered structure effects (OSE) on crystallization behaviors of β-nucleated isotactic polypropylene/graphene oxide (β-iPP/GO) composites with different thermal histories, which crystallized at a slow cooling rate (called SLOW), fast cooling rate (called FAST) and medi...

Descripción completa

Detalles Bibliográficos
Autores principales: Yu, Yansong, Xu, Ruizhang, Chen, Jinyao, Kang, Jian, Xiang, Ming, Li, Yuanjie, Li, Lu, Sheng, Xingyue
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9065320/
https://www.ncbi.nlm.nih.gov/pubmed/35519359
http://dx.doi.org/10.1039/c9ra03416a
_version_ 1784699559961690112
author Yu, Yansong
Xu, Ruizhang
Chen, Jinyao
Kang, Jian
Xiang, Ming
Li, Yuanjie
Li, Lu
Sheng, Xingyue
author_facet Yu, Yansong
Xu, Ruizhang
Chen, Jinyao
Kang, Jian
Xiang, Ming
Li, Yuanjie
Li, Lu
Sheng, Xingyue
author_sort Yu, Yansong
collection PubMed
description In this paper, the influence of ordered structure effects (OSE) on crystallization behaviors of β-nucleated isotactic polypropylene/graphene oxide (β-iPP/GO) composites with different thermal histories, which crystallized at a slow cooling rate (called SLOW), fast cooling rate (called FAST) and medium cooling rate (called MED), respectively, was studied by differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD). The ordered structure status of three samples before crystallization measurement was controlled by tuning the fusion temperature T(f) and melting time t(m). The results showed that for all samples, OSE would occur in an appropriate T(f) region (Region II). The OSE efficiency of MED was the highest, while that of SLOW were the lowest. It was also found that the crystallinity and crystalline perfection of SLOW were the highest, while those of FAST were the lowest. The effects of the melting time t(m) on the OSE were also investigated. At T(f) = 172 °C, the OSE efficiency of FAST reached the maximum at t(m) = 5 min, while that of SLOW reached the maximum at t(m) = 20 min. It was indicated that the OSE efficiency was affected by thermal history, and it could be improved by selecting the appropriate t(m). Related mechanisms concerning the roles of thermal history on the OSE behavior were proposed based on the results of DSC and in situ SAXS.
format Online
Article
Text
id pubmed-9065320
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher The Royal Society of Chemistry
record_format MEDLINE/PubMed
spelling pubmed-90653202022-05-04 Ordered structure effects on β-nucleated isotactic polypropylene/graphene oxide composites with different thermal histories Yu, Yansong Xu, Ruizhang Chen, Jinyao Kang, Jian Xiang, Ming Li, Yuanjie Li, Lu Sheng, Xingyue RSC Adv Chemistry In this paper, the influence of ordered structure effects (OSE) on crystallization behaviors of β-nucleated isotactic polypropylene/graphene oxide (β-iPP/GO) composites with different thermal histories, which crystallized at a slow cooling rate (called SLOW), fast cooling rate (called FAST) and medium cooling rate (called MED), respectively, was studied by differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD). The ordered structure status of three samples before crystallization measurement was controlled by tuning the fusion temperature T(f) and melting time t(m). The results showed that for all samples, OSE would occur in an appropriate T(f) region (Region II). The OSE efficiency of MED was the highest, while that of SLOW were the lowest. It was also found that the crystallinity and crystalline perfection of SLOW were the highest, while those of FAST were the lowest. The effects of the melting time t(m) on the OSE were also investigated. At T(f) = 172 °C, the OSE efficiency of FAST reached the maximum at t(m) = 5 min, while that of SLOW reached the maximum at t(m) = 20 min. It was indicated that the OSE efficiency was affected by thermal history, and it could be improved by selecting the appropriate t(m). Related mechanisms concerning the roles of thermal history on the OSE behavior were proposed based on the results of DSC and in situ SAXS. The Royal Society of Chemistry 2019-06-24 /pmc/articles/PMC9065320/ /pubmed/35519359 http://dx.doi.org/10.1039/c9ra03416a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Yu, Yansong
Xu, Ruizhang
Chen, Jinyao
Kang, Jian
Xiang, Ming
Li, Yuanjie
Li, Lu
Sheng, Xingyue
Ordered structure effects on β-nucleated isotactic polypropylene/graphene oxide composites with different thermal histories
title Ordered structure effects on β-nucleated isotactic polypropylene/graphene oxide composites with different thermal histories
title_full Ordered structure effects on β-nucleated isotactic polypropylene/graphene oxide composites with different thermal histories
title_fullStr Ordered structure effects on β-nucleated isotactic polypropylene/graphene oxide composites with different thermal histories
title_full_unstemmed Ordered structure effects on β-nucleated isotactic polypropylene/graphene oxide composites with different thermal histories
title_short Ordered structure effects on β-nucleated isotactic polypropylene/graphene oxide composites with different thermal histories
title_sort ordered structure effects on β-nucleated isotactic polypropylene/graphene oxide composites with different thermal histories
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9065320/
https://www.ncbi.nlm.nih.gov/pubmed/35519359
http://dx.doi.org/10.1039/c9ra03416a
work_keys_str_mv AT yuyansong orderedstructureeffectsonbnucleatedisotacticpolypropylenegrapheneoxidecompositeswithdifferentthermalhistories
AT xuruizhang orderedstructureeffectsonbnucleatedisotacticpolypropylenegrapheneoxidecompositeswithdifferentthermalhistories
AT chenjinyao orderedstructureeffectsonbnucleatedisotacticpolypropylenegrapheneoxidecompositeswithdifferentthermalhistories
AT kangjian orderedstructureeffectsonbnucleatedisotacticpolypropylenegrapheneoxidecompositeswithdifferentthermalhistories
AT xiangming orderedstructureeffectsonbnucleatedisotacticpolypropylenegrapheneoxidecompositeswithdifferentthermalhistories
AT liyuanjie orderedstructureeffectsonbnucleatedisotacticpolypropylenegrapheneoxidecompositeswithdifferentthermalhistories
AT lilu orderedstructureeffectsonbnucleatedisotacticpolypropylenegrapheneoxidecompositeswithdifferentthermalhistories
AT shengxingyue orderedstructureeffectsonbnucleatedisotacticpolypropylenegrapheneoxidecompositeswithdifferentthermalhistories