Long-Chain Anhydride Modification: A New Strategy for Preparing Xylan Films

Zhong, Linxin; Peng, Xinwen; Yang, Dong; Cao, Xuefei; Sun, Run‐Cang

doi:10.1021/jf304818f

Cited by 72 publications

(26 citation statements)

References 32 publications

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“…Four degradations peaks for PX0, P3X1, PX10, and P1X1 were observed at 316, 441, 361, and 433 ∘ C, respectively. The sudden drop in weight with increasing temperature occurred between 250 and 400 ∘ C. The decrease of hydrogen bonds may lead to the decreasing thermal stability of films, because the rupture of hydrogen bonds requires more energy during thermal degradation [6]. As expected, the total weight loss of the plasticized PVA/xylan films was lower than that of pure composite film (PX0).…”

Section: Thermogravimetric Analysis (Tga)supporting

confidence: 56%

“…Hemicelluloses (mainly xylans and mannans) were used as sustainable packaging materials and more hydrophobic films with the low water vapor and oxygen permeability could be obtained [4,5]. Xylan films modified by longchain anhydride were prepared [6]. Modified xylan had better film-forming performance and the tensile strength had increased and moisture-sensitive properties had been lessened due to long carbon chains modification.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Polyvinyl Alcohol/Xylan Blending Films with 1,2,3,4‐Butane Tetracarboxylic Acid as a New Plasticizer

Gao

Ren

Wang

et al. 2014

Journal of Nanomaterials

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Miscible, biodegradable polyvinyl alcohol (PVA)/xylan blending films were firstly prepared in the range of the PVA/xylan weight ratio from 1 : 2 to 3 : 1 by casting method using 1,2,3,4-butane tetracarboxylic acid (BTCA) as a new plasticizer. The properties of blending films as functions of PVA/xylan weight ratio and BTCA amount were discussed. XRD and FT-IR were applied to characterize the blending films. Experimental results indicated that tensile strength (TS) and elongation at break (EAB) of blending films decreased along with the decrease of the PVA/xylan weight ratio. Both of TS and EAB firstly increased and then decreased as the amount of BTCA was increased. More importantly, blending films were biodegraded almost by 41% with an addition of 10% BTCA in blending films within 30 days in soil. For all hydroxyl functionalized polymers (xylan and PVA), their molecular interactions and miscibility with BTCA endowed blending films with the biocompatibility and biodegradability. Therefore, these blending films are environmentally friendly materials which could be applied as biodegradable plastics for food packaging and agricultural applications.

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Section: Thermogravimetric Analysis (Tga)supporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Preparation of Polyvinyl Alcohol/Xylan Blending Films with 1,2,3,4‐Butane Tetracarboxylic Acid as a New Plasticizer

Gao

Ren

Wang

et al. 2014

Journal of Nanomaterials

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“…xylan, and other saccharides [8]. However, hemicelluloses are intrinsically bound to cellulose and lignin in the plant cell wall, so it is difficult to separate them without causing a modification in their structure [8,10].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Hemicellulose Films from Sugarcane Bagasse

Braga

Poletto

2020

Materials

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Hemicellulose is one of the most common polysaccharides found in nature. Its use as a green and sustainable raw material for industries is desirable. In this work, an alkaline-alcoholic method was used to extract hemicelluloses from sugarcane bagasse. After extraction, films with 2%, 3% and 4% (w/v) hemicellulose were produced. The films’ morphology, thickness, water solubility, tensile properties and thermal stability were evaluated. The Fourier Transform Infrared Spectroscopy (FTIR) results reveal that the method used removes the hemicellulose from bagasse with a low concentration of lignin. The films presented a compact and dense structure with uniformity in thickness associated with higher solubility in water. The increase in hemicellulose content increased tensile strength, but reduced the tensile strain of the films. Thermogravimetric analysis indicated that the increase in hemicellulose content reduced the films’ thermal stability. Thus, these films may act as useful, biodegradable and environmentally friendly materials for engineering applications.

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“…In the spectrum of gel-3, the bonds at 1635 cm −1 and 1560 cm −1 are assigned to stretching vibration of –N–H in NIPAm [24,38,39,40]. The bonds at 1452 cm −1 and 1382 cm −1 are assigned to the asymmetric absorption peak of COO − and bending vibration of C–H originating from AA, respectively [41]. These signal changes observed in the FTIR spectra confirmed the successful synthesis of the target hydrogels.…”

Section: Resultsmentioning

confidence: 99%

Xylan-Modified-Based Hydrogels with Temperature/pH Dual Sensitivity and Controllable Drug Delivery Behavior

Kong

Gao

et al. 2017

Materials

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Among the natural macromolecules potentially used as the scaffold material in hydrogels, xylan has aroused great interest in many fields because of its biocompatibility, low toxicity, and biodegradability. In this work, new pH and thermoresponsive hydrogels were prepared by the cross-linking polymerization of maleic anhydride-modified xylan (MAHX) with N-isopropylacrylamide (NIPAm) and acrylic acid (AA) under UV irradiation to form MAHX-g-P(NIPAm-co-AA) hydrogels. The pore volume, the mechanical properties, and the release rate for drugs of hydrogels could be controlled by the degree of substitution of MAHX. These hydrogels were characterized by swelling ability, lower critical solution temperature (LCST), Fourier-transform infrared (FTIR), and SEM. Furthermore, the cumulative release rate was investigated for acetylsalicylic acid and theophylline, as well as the cytocompatibility MAHX-based hydrogels. Results showed that MAHX-based hydrogels exhibited excellent swelling–deswelling properties, uniform porous structure, and the temperature/pH dual sensitivity. In vitro, the cumulative release rate of acetylsalicylic acid for MAHX-based hydrogels was higher than that for theophylline, and in the gastrointestinal sustained drug release study, the acetylsalicylic acid release rate was extremely slow during the initial 3 h in the gastric fluid (24.26%), and then the cumulative release rate reached to 90.5% after sustained release for 5 h in simulated intestinal fluid. The cytotoxicity experiment demonstrated that MAHX-based hydrogels could promote cell proliferation and had satisfactory biocompatibility with NIH3T3 cells. These results indicated that MAHX-based hydrogels, as new drug carriers, had favorable behavior for intestinal-targeted drug delivery.

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Long-Chain Anhydride Modification: A New Strategy for Preparing Xylan Films

Cited by 72 publications

References 32 publications

Preparation of Polyvinyl Alcohol/Xylan Blending Films with 1,2,3,4‐Butane Tetracarboxylic Acid as a New Plasticizer

Preparation of Polyvinyl Alcohol/Xylan Blending Films with 1,2,3,4‐Butane Tetracarboxylic Acid as a New Plasticizer

Preparation and Characterization of Hemicellulose Films from Sugarcane Bagasse

Xylan-Modified-Based Hydrogels with Temperature/pH Dual Sensitivity and Controllable Drug Delivery Behavior

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