Combined effects of clay minerals and polyethylene glycol in the mechanical and water barrier properties of carboxymethylcellulose films

Biodegradable PLA/PBSA multinanolayer nanocomposites were obtained from semi-crystalline poly(butylene succinate-co-butylene adipate) (PBSA) nanolayers filled with nanoclays and confined against amorphous poly(lactic acid) (PLA) nanolayers in a continuous manner by applying an innovative coextrusion technology. The cloisite 30B (C30B) filler incorporation in nanolayers was considered to be an improvement of barrier properties of the multilayer films additional to the confinement effect resulting to forced assembly during the multilayer coextrusion process. 2049-layer films of ~300 µm thick were processed containing loaded PBSA nanolayers of ~200 nm, which presented certain homogeneity and were mostly continuous for the 80/20 wt% PLA/PBSA composition. The nanocomposite PBSA films (monolayer) were also processed for comparison. The presence of exfoliated and intercalated clay structure and some aggregates were observed within the PBSA nanolayers depending on the C30B content. A greater reduction of macromolecular chain segment mobility was measured due to combined effects of confinement effect and clays constraints. The absence of both polymer and clays interdiffusions was highlighted since the PLA glass transition was unchanged. Besides, a larger increase in local chain rigidification was evidenced through RAF values due to geometrical constraints initiated by close nanoclay contact without changing the crystallinity of PBSA. Tortuosity effects into the filled PBSA layers adding to confinement effects induced by PLA layers have caused a significant improvement of water barrier properties through a reduction of water permeability, water vapor solubility and water vapor diffusivity. The obtaining barrier properties were successfully correlated to microstructure, thermal properties and mobility of PBSA amorphous phase.

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Novel Whey Protein Isolate/Polyvinyl Biocomposite for Packaging: Improvement of Mechanical and Water Barrier Properties by Incorporation of Nano-silica

Journal of Polymers and the Environment ◽

10.1007/s10924-020-02033-x ◽

2021 ◽

Author(s):

Bruna Rage Baldone Lara ◽

Paulo Sérgio de Andrade ◽

Mario Guimarães Junior ◽

Marali Vilela Dias ◽

Lizzy Ayra Pereira Alcântara

Keyword(s):

Whey Protein ◽

Barrier Properties ◽

Whey Protein Isolate ◽

Protein Isolate ◽

Nano Silica ◽

Water Barrier

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Multifunctional hydrolyzed EVA membranes with tunable microstructure and water barrier properties

Journal of Membrane Science ◽

10.1016/j.memsci.2015.01.008 ◽

2015 ◽

Vol 480 ◽

pp. 93-103 ◽

Cited By ~ 15

Author(s):

Jorge A. Soto Puente ◽

Kateryna Fatyeyeva ◽

Stéphane Marais ◽

Eric Dargent

Keyword(s):

Barrier Properties ◽

Water Barrier

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Effect of Thickness on the Water-Barrier Properties of Silane Films

The Journal of Physical Chemistry C ◽

10.1021/jp075023f ◽

2007 ◽

Vol 111 (42) ◽

pp. 15325-15330 ◽

Cited By ~ 9

Author(s):

Guirong Pan ◽

Erik Watkins ◽

Jaroslaw Majewski ◽

Dale W. Schaefer

Keyword(s):

Barrier Properties ◽

Water Barrier

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Physical, mechanical and water barrier properties of yuba films incorporated with various types of additives

Journal of the Science of Food and Agriculture ◽

10.1002/jsfa.9490 ◽

2019 ◽

Vol 99 (6) ◽

pp. 2808-2817 ◽

Cited By ~ 5

Author(s):

Nayeon Kim ◽

Eunsung Seo ◽

Yookyung Kim

Keyword(s):

Barrier Properties ◽

Water Barrier

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Barrier properties of natural clay minerals

Proceedings of National Aviation University ◽

10.18372/2306-1472.38.1662 ◽

2009 ◽

Vol 38 (1) ◽

Author(s):

Т.В. Дудар ◽

С.П. Бугера ◽

В.М. Кадошніков ◽

Б.П. Злобенко

Keyword(s):

Clay Minerals ◽

Barrier Properties ◽

Natural Clay

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The Study of Chitosan Solution Coating on Water Barrier Property of Seedling Paper Bag Made from Water Hyacinth

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1047.97 ◽

2021 ◽

Vol 1047 ◽

pp. 97-102

Author(s):

Nattanicha Khamsao ◽

Kornkamon Waengwan ◽

Sunisorn Konchai ◽

Poonnapat Patthong ◽

Bpantamars Phadungchob ◽

...

Keyword(s):

Water Hyacinth ◽

Aquatic Plant ◽

Water Resistance ◽

Low Cost ◽

Hydrophobic Surface ◽

Chitosan Solution ◽

Barrier Properties ◽

Water Contact ◽

Water Barrier ◽

Spraying Method

Seedling bags are low cost and light weight containers used by farmers to germinate and sprout seeds into seedlings before transplanting into the ground. However, cutting and removing seedling bags before the transplantation can damage the plant roots and cause losses in their productivity. In addition, plastics used in conventional seedling bags contribute to more plastic waste during this process. This study offers a solution to these problems with alternative biodegradable materials; i.e. modified papers made from an invasive alien aquatic plant species—water hyacinth—and enhanced with Chitosan solution coating. Papers were made from water hyacinth and dipped or sprayed with Chitosan solution in acetic acid at concentrations of 1% wt., 1.5% wt., and 2% wt. The dipping method showed better water barrier properties than the spraying method in every concentration, with 2% wt. concentration having the best barrier properties. The 2% wt. concentration of Chitosan coating by dipping method changed the water contact angle of the water hyacinth paper from a hydrophilic to a hydrophobic surface. This enhancement in water resistance was confirmed by water absorption time, which reached over 1.5 hours—3 times longer than the spraying method.

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Development of Waterproof Papers from Water Hyacinth Fibers Modified by Polylactide

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1015.89 ◽

2020 ◽

Vol 1015 ◽

pp. 89-93

Author(s):

Thitipong Wutisart

Keyword(s):

Water Absorption ◽

Cross Section ◽

Water Hyacinth ◽

Barrier Properties ◽

Hydrophobic Properties ◽

Sem Images ◽

Water Barrier

Paper made from water hyacinth which was modified by PLA solvent coating and the PLA content were varied for finding the most appropriate content. The SEM images of both surface and cross section were carried out for showing the interaction between the water hyacinth paper and PLA film. The water barrier properties of PLA content at 0.4 % (W/V) and 0.6 % (W/V) showed the hydrophobic properties of water hyacinth paper. The modified water hyacinth paper could resist water being indicated by water absorption which was over 90 minute/5µL in any PLA content.

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