Hybrid Ni-Al layered double hydroxide/graphene reinforced polyvinyl alcohol/starch blends

P. A. Sreekumar; Hafiz Muhammad Afzal; Mamdouh A. Al-Harthi

doi:10.1002/pc.25708

Hybrid Ni-Al layered double hydroxide/graphene reinforced polyvinyl alcohol/starch blends

P. A. Sreekumar, Hafiz Muhammad Afzal, Mamdouh A. Al-Harthi^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Ni-Al layered double hydroxide/graphene hybrid fillers were prepared via co-precipitation method. The structural and thermal studies of these fillers were conducted using X-ray diffractometer (XRD) and thermogravimetric analyzer (TGA). Subsequently, by using solution casting method, these fillers were introduced into the polyvinyl alcohol (PVA)/starch matrix as reinforcing agent. For the composites, characteristic peaks of Ni-Al-LDH/graphene disappeared irrespective of filler content. TGA showed an increase in the initial degradation temperature (234-242 °C) when filler content was increased from 0 to 2 wt%. Differential scanning calorimeter (DSC) analysis exhibited an increase in heat of fusion (ΔH_m), melting temperature (T_m) and percentage crystallinity values for the PVA/ starch matrix having 1 wt% of filler. Similar trend was observed for tensile strength and Young's modulus of composites. Scanning electron microscopy (SEM) showed a homogeneous distribution of filler throughout the matrix.

Original language	English
Pages (from-to)	4253-4259
Number of pages	7
Journal	Polymer Composites
Volume	41
Issue number	10
DOIs	https://doi.org/10.1002/pc.25708
State	Published - 1 Oct 2020

Bibliographical note

Publisher Copyright:
© 2020 Society of Plastics Engineers

Keywords

graphene
layered double hydroxide (LDH)
polyvinyl alcohol (PVA)
starch

ASJC Scopus subject areas

Ceramics and Composites
General Chemistry
Polymers and Plastics
Materials Chemistry

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10.1002/pc.25708

Cite this

@article{4d1a0d5189844106a1f411455f081c37,

title = "Hybrid Ni-Al layered double hydroxide/graphene reinforced polyvinyl alcohol/starch blends",

abstract = "Ni-Al layered double hydroxide/graphene hybrid fillers were prepared via co-precipitation method. The structural and thermal studies of these fillers were conducted using X-ray diffractometer (XRD) and thermogravimetric analyzer (TGA). Subsequently, by using solution casting method, these fillers were introduced into the polyvinyl alcohol (PVA)/starch matrix as reinforcing agent. For the composites, characteristic peaks of Ni-Al-LDH/graphene disappeared irrespective of filler content. TGA showed an increase in the initial degradation temperature (234-242 °C) when filler content was increased from 0 to 2 wt\%. Differential scanning calorimeter (DSC) analysis exhibited an increase in heat of fusion (ΔHm), melting temperature (Tm) and percentage crystallinity values for the PVA/ starch matrix having 1 wt\% of filler. Similar trend was observed for tensile strength and Young's modulus of composites. Scanning electron microscopy (SEM) showed a homogeneous distribution of filler throughout the matrix.",

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doi = "10.1002/pc.25708",

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AU - Sreekumar, P. A.

AU - Afzal, Hafiz Muhammad

AU - Al-Harthi, Mamdouh A.

PY - 2020/10/1

Y1 - 2020/10/1

N2 - Ni-Al layered double hydroxide/graphene hybrid fillers were prepared via co-precipitation method. The structural and thermal studies of these fillers were conducted using X-ray diffractometer (XRD) and thermogravimetric analyzer (TGA). Subsequently, by using solution casting method, these fillers were introduced into the polyvinyl alcohol (PVA)/starch matrix as reinforcing agent. For the composites, characteristic peaks of Ni-Al-LDH/graphene disappeared irrespective of filler content. TGA showed an increase in the initial degradation temperature (234-242 °C) when filler content was increased from 0 to 2 wt%. Differential scanning calorimeter (DSC) analysis exhibited an increase in heat of fusion (ΔHm), melting temperature (Tm) and percentage crystallinity values for the PVA/ starch matrix having 1 wt% of filler. Similar trend was observed for tensile strength and Young's modulus of composites. Scanning electron microscopy (SEM) showed a homogeneous distribution of filler throughout the matrix.

AB - Ni-Al layered double hydroxide/graphene hybrid fillers were prepared via co-precipitation method. The structural and thermal studies of these fillers were conducted using X-ray diffractometer (XRD) and thermogravimetric analyzer (TGA). Subsequently, by using solution casting method, these fillers were introduced into the polyvinyl alcohol (PVA)/starch matrix as reinforcing agent. For the composites, characteristic peaks of Ni-Al-LDH/graphene disappeared irrespective of filler content. TGA showed an increase in the initial degradation temperature (234-242 °C) when filler content was increased from 0 to 2 wt%. Differential scanning calorimeter (DSC) analysis exhibited an increase in heat of fusion (ΔHm), melting temperature (Tm) and percentage crystallinity values for the PVA/ starch matrix having 1 wt% of filler. Similar trend was observed for tensile strength and Young's modulus of composites. Scanning electron microscopy (SEM) showed a homogeneous distribution of filler throughout the matrix.

KW - graphene

KW - layered double hydroxide (LDH)

KW - polyvinyl alcohol (PVA)

KW - starch

UR - https://www.scopus.com/pages/publications/85087555555

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DO - 10.1002/pc.25708

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SN - 0272-8397

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JO - Polymer Composites

JF - Polymer Composites

IS - 10

ER -

Hybrid Ni-Al layered double hydroxide/graphene reinforced polyvinyl alcohol/starch blends

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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