Characterization of Poly(vinyl alcohol) Nanocomposite Films with Various Clays

Ham, Miran; Kim, Jeong-Cheol; Chang, Jin‐Hae

doi:10.7317/pk.2013.37.2.225

Cited by 8 publications

(5 citation statements)

References 41 publications

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“…Collectively, the results of the gas permeation analysis reveal that the strongest gas barrier effect of OMB is observed with respect to the O 2 TR among the three types of nanofillers that are studied. The enhanced gas barrier capacity of OMB stems from its hydrophilic character, and this allows the formation of hydrogen bonds between OMB molecules and the PVA polymer matrix as well as the reinforcement of chain packing, which significantly reduces the gas permeability of the material [45].…”

Section: Resultsmentioning

confidence: 99%

Comparative Analysis of Properties of PVA Composites with Various Nanofillers: Pristine Clay, Organoclay, and Functionalized Graphene

Chang

2019

Nanomaterials

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Poly(vinyl alcohol) (PVA) nanocomposites containing three different nanofillers are prepared and compared in terms of their thermal properties, morphologies, and oxygen permeabilities. Specifically, pristine saponite (SPT) clay, hydrophilic organically modified bentonite (OMB), and hexadecylamine-functionalized graphene sheets (HDA-GSs) are utilized as nanofillers to fabricate PVA nanocomposite films. The hybrid films are fabricated from blended solutions of PVA and the three different nanofillers. The content of each filler with respect to PVA is varied from 0 to 10 wt%, and the changes in the properties of the PVA matrices as a function of the filler content are discussed. With respect to the hybrid containing 5 wt% of SPT, OMB, and HDA-GS, each layer in the polymer matrix consists of well-dispersed individual nanofiller layers. However, the fillers are mainly aggregated in the polymer matrix in a manner similar to the case for the hybrid material containing 10 wt% of fillers. In the thermal properties, SPT and OMB are most effective when the filler corresponds to 5 wt% and 7 wt% for HDA-GS, respectively, and the gas barrier is most effective with respect to 5 wt% content in all fillers. Among the three types of nanofillers that are investigated, OMB exhibits optimal results in terms of thermal stability and the gas barrier effect.

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Section: Resultsmentioning

confidence: 99%

Comparative Analysis of Properties of PVA Composites with Various Nanofillers: Pristine Clay, Organoclay, and Functionalized Graphene

Chang

2019

Nanomaterials

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“…Conventional alumina/zinc oxide coatings display excellent barrier properties but are easy to break or crack when the barrier films are stretched. Although pure polymer materials such as ethylene/vinyl alcohol copolymer (EVOH), polyvinyl alcohol (PVA), and polyvinylidene chloride (PVDC) can meet the requirement of general packaging application, they cannot be applied to high barrier fields 6–12 . Besides, such polymer materials have limited application range due to their humidity sensitivity and poor mechanical strength.…”

Section: Introductionmentioning

confidence: 99%

Stretchable gas barrier films achieved by hydrogen‐bond self‐assembly of nano‐brick multilayers

Shi

Dong

et al. 2021

AIChE Journal

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Inorganic–organic hybrid films containing two‐dimensional nanosheets have shown good gas barrier performance, but moderate tensile property, because of the rigid characteristics of covalent or ionic bonds between the assembly units. In this work, we used LDH nanosheets rich in hydroxyl groups as building units, followed by modification of tannic acid (TA), to assemble with polyethylene oxide (PEO) through hydrogen bonds. Compared with previous work, the tensile property and oxygen barrier performance of (TA@LDH/PEO)n films have been significantly improved. A 50‐bilayer TA@LDH/PEO film, deposited on a 1 mm thick natural rubber substrate, results in a 29× reduction (contrast with bare substrate) in oxygen transmission rate and maintains its good barrier property even under a large elongation of 120%. The excellent tensile and gas barrier properties are attributed to the ductility of hydrogen bond network among building blocks and the significant prolongation of oxygen transmission path induced by LDH nanosheets.

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“…Although pure polymer materials such as ethylene/vinyl alcohol copolymer (EVOH), polyvinyl alcohol (PVA), and polyvinylidene chloride (PVDC) can meet the requirement of general packaging application, they cannot be applied to high barrier fields. [6][7][8][9][10][11][12] Besides, such polymer materials have limited application range due to their humidity sensitivity and poor mechanical strength. By hybridizing inorganic nanoplatelets (such as hydrotalcite and montmorillonite) with polymers, multilayer organic-inorganic films called "nano-brick" solve the problem of poor gas barrier property of polymers and simultaneously improve the mechanical property.…”

Section: Introductionmentioning

confidence: 99%

Stretchable gas barrier films achieved by hydrogen-bond self-assembly of nano-brick multilayers

Shi

Dong

et al. 2021

Preprint

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Characterization of Poly(vinyl alcohol) Nanocomposite Films with Various Clays

Cited by 8 publications

References 41 publications

Comparative Analysis of Properties of PVA Composites with Various Nanofillers: Pristine Clay, Organoclay, and Functionalized Graphene

Comparative Analysis of Properties of PVA Composites with Various Nanofillers: Pristine Clay, Organoclay, and Functionalized Graphene

Stretchable gas barrier films achieved by hydrogen‐bond self‐assembly of nano‐brick multilayers

Stretchable gas barrier films achieved by hydrogen-bond self-assembly of nano-brick multilayers

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