Biodegradation behaviors and water adsorption of poly(vinyl alcohol)/starch/carboxymethyl cellulose/clay nanocomposites

Taghizadeh, Mohammad Taghi; Sabouri, Narges

doi:10.1186/2228-5326-3-51

Cited by 33 publications

(23 citation statements)

References 31 publications

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“…The weight loss up to 200 °C in all the samples results from the evaporation of absorbed moisture and the volatization of easily degradable components such as glycerol [34,35]. It was found that the PS films cross linked with citric acid (PSC0) found to show the significant thermal stability.…”

Section: Thermal Studymentioning

confidence: 99%

Synthesis and characterization of PVA/Starch/CMC composite films reinforced with walnut (Juglans regia L.) shell flour

2019

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Polyvinyl alcohol/Starch/Carboxymethyl cellulose (PSC) composite films were synthesized by solvent casting method using glycerol as plasticizer and citric acid as cross linking agent. The effect of different loadings of carboxymethyl cellulose (CMC) on thermal and tensile properties of PVA/Starch (PS) composites was investigated. The increasing concentration of CMC enhanced the thermal stability of PS composite films. PSC film at an optimum level of CMC showed the maximum tensile strength (36.56 ± 1.54 MPa) and was further chosen to analyze the effect of walnut shell flour (WSF) addition. PSC films reinforced with different amounts of WSF were analyzed by thermogravimetric analysis, UV absorption spectra, tensile testing, water absorption study and soil burial degradability test. The reinforcement of WSF showed a remarkable improvement in thermal stability and water resistant property of the films. Addition of WSF in PSC films reduced the degradability of films, with maximum percentage of weight loss obtained with 2% loading. Further, the tensile strength was found to be improved up to 6% level (41.09 ± 0.71 MPa). ANOVA of the tensile data recognized the considerable differences between the mean tensile strength from one composition to another (p < 0.05).

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Section: Thermal Studymentioning

confidence: 99%

Synthesis and characterization of PVA/Starch/CMC composite films reinforced with walnut (Juglans regia L.) shell flour

2019

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“…The percentages of soluble matter of the pure CMC, pure PVA, and different HCl‐treated films (CPH 1 , CPH 2 , and CPH 3 ) were found to be 78.83, 74.58, 5.96, 16.74, and 18.87, respectively, after immersion in distilled water for 24 h. The solubility of different films was also tested for up to 72 h, but the differences were found to be very negligible between the results for 24 and 72 h. The total solids remaining insoluble (insoluble matter) after 24–72 h were found to be about 21.17, 25.42, 94.04, 83.26, and 81.13%, respectively, for aforementioned films. A similar study was conducted on a PVA/starch/CMC/sodium montmorillonite composite, where researchers found solid remains of 74.53 wt % for PVA/starch/CMC, 77.87 wt % for PVA/starch/CMC/1% sodium montmorillonite, and 80.13 wt % for PVA/starch/CMC/5% sodium montmorillonite.…”

Section: Resultsmentioning

confidence: 99%

Effect of hydrochloric acid on the properties of biodegradable packaging materials of carboxymethylcellulose/poly(vinyl alcohol) blends

Harun-or-Rashid

Rahaman

Kabir

et al. 2015

J of Applied Polymer Sci

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The main focus of this research was to prepare ecofriendly biodegradable packaging materials with carboxymethylcellulose (CMC) and poly(vinyl alcohol) (PVA). Different blend films were prepared through the variation of the ratios of CMC to PVA (00:100, 30:70, 50:50, 70:30, 100:00 w/w) with and without hydrochloric acid. The mechanical properties, including the tensile strength (TS), percentage elongation at break (Eb), water uptake, and solubility in water, of the films were investigated. A soil burial test was also performed. The prepared films were characterized by attenuated total reflectance (ATR)–Fourier transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The highest TS and Eb values of the blend films were recorded as 19.52 MPa and 34.52%, respectively. ATR–FTIR spectroscopy, DSC, and TGA results provided that in the presence of HCl, a chemical reaction occurred between CMC and PVA. In addition, the water uptake, solubility in water, and biodegradability of the films were found to be reduced significantly. With all of these results, in presence of HCl, a blend made up of CMC and PVA with a ratio 30:70 was optimized as a biodegradable packaging material. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 42870.

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“…Hal ini dikarenakan PVA mulai mengalami dekomposisi pada 30-40 ºC ketika disimpan dalam waktu yang lama. Dekomposisi pada suhu yang lebih tinggi dapat menyebabkan terjadinya perubahan warna yaitu dari kuning hingga hitam (25) . Etil selulosa juga mulai mengalami degradasi ketika disimpan pada suhu melebihi 32 °C dalam jangka waktu yang lama (26) .…”

Section: K a N D U N G A N L E M B A B M A T R I K S P A T C Hunclassified

Pengaruh Polimer dan Peningkat Penetrasi Terhadap Karakter Penetrasi Matriks Sediaan Patch Transdermal Karvedilol

Ramadhani

Djajadisastra

Iskandarsyah

2017

jifi

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Carvedilol is β-blocker antihypertensive drug with low oral bioavaibility and short half time which causes the frequency of oral drug used more often or the oral dose might be increased. Transdermal patch with the matrix system can deliver drug through skin in controlled within specifi c time period and hopefully it can improve carvedilol bioavaibility and convenience for patients.The aim of research was to fi nd out the effect of polymer and penetration enhancer toward penetration characteristic of carvedilol transdermal patch matrix seen from kinetics release data and penetration data of carvedilol. The polymer ratio of Polyvinyl Alcohol (PVA) : Ethyl cellulose (ES) polymers and Sorbitan Monolaurate (SM) as penetration enhancer concentrations used were F1 (1:1) / 8%, F2 (1: 1) /10%, F3 (2:1) /8%, F4 (2:1)/10%. Formula F1 did not pass in the organoleptictes so next test only carried out for formula F2, F3 and F4. The in vitro release of carvedilol showed formula F2, F3 and F4 lasted for 24 hours and the released kinetics of carvedilol followed the order of 0 and Higuchi. Carvedilol % cumulative from penetration test in vitro showed for F2, F3 and F4 formulas respectively were 15,384%, 16,495% and 18,287%.

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Biodegradation behaviors and water adsorption of poly(vinyl alcohol)/starch/carboxymethyl cellulose/clay nanocomposites

Cited by 33 publications

References 31 publications

Synthesis and characterization of PVA/Starch/CMC composite films reinforced with walnut (Juglans regia L.) shell flour

Synthesis and characterization of PVA/Starch/CMC composite films reinforced with walnut (Juglans regia L.) shell flour

Effect of hydrochloric acid on the properties of biodegradable packaging materials of carboxymethylcellulose/poly(vinyl alcohol) blends

Pengaruh Polimer dan Peningkat Penetrasi Terhadap Karakter Penetrasi Matriks Sediaan Patch Transdermal Karvedilol

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