Effect of Crystal Structure and Hydrogen Bond of Thermoplastic Oxidized Starch on Manufacturing of Starch-Based Biomass Composite

Zhang, Chuanwei; Li, Fangyi; Li, Jianfeng; Xu, Jie; Guo, Anfu; Chengzhao, Wang

doi:10.1007/s40684-018-0046-1

Cited by 8 publications

(3 citation statements)

References 26 publications

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“…Figure 3a shows XRD patterns of the native, esterified and post‐esterified oxidized starches. Generally, all patterns are similar in macro and four major peaks at the 2 θs close to 15, 17, 18, and 23° are observed, corresponding to lattice planes of A‐typed crystalline starch 2,9,24,28–30 . Except for them no additional peaks at interval positions such as 8, 28, and 33° are observed, showing purity.…”

Section: Resultsmentioning

confidence: 72%

“…Generally, all patterns are similar in macro and four major peaks at the 2θs close to 15, 17, 18, and 23 are observed, corresponding to lattice planes of A-typed crystalline starch. 2,9,24,[28][29][30] Except for them no additional peaks at interval positions such as 8, 28, and 33 are observed, showing purity. In addition to purity, a more important issue is the variation in crystalline structure.…”

Section: Structure Analysismentioning

confidence: 93%

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A synthesis of post‐esterified oxidized starch accompanied with physicochemical property analysis and esterification reaction condition optimization

Jiang,

Zhang,

Fang

et al. 2023

J of Applied Polymer Sci

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Esterification is a normal method for starch modification while reaction condition is not clear. Here, pure corn starch and vinyl acetate were chosen for starch esterification. Reaction conditions involving esterifying agent content, pH, reaction time and temperature were explored. Dess‐Martin periodinane (DMP) pretreatment was adopted to accelerate esterification. Main results reveal that a content of 30 wt% vinyl acetate, pH = 9, time as 1 h and temperature as 45°C is an optimized condition for vinyl acetate esterification and DMP oxidization can enhance it. After modification, variations in microstructure, surface morphology and macroscopic properties such as viscosity, transparency, adhesion property were explored by FT‐IR, XRD, SEM, TGA, UV–Vis, viscosity, and slushing experiments. Main results reveal that after esterification carbonyl groups were introduced, lattice plane occurred expansion, surface morphology was destroyed, water absorption capacity, viscosity, and gelatinization temperature decreased while transparency, thermal‐stability and adhesion property increased. DMP treatment enhanced the previous variations. It seems via a middle‐level DMP pretreatment and vinyl acetate esterification starch solution viscosity and gelatinization temperature decreased greatly while transparency and adhesion force increased greatly, possibly having a potential use in textile industry. For instance, using as slurry its manufacture cost can be decreased with decreased energy consumption, economical.

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Section: Resultsmentioning

confidence: 72%

Section: Structure Analysismentioning

confidence: 93%

A synthesis of post‐esterified oxidized starch accompanied with physicochemical property analysis and esterification reaction condition optimization

Jiang,

Zhang,

Fang

et al. 2023

J of Applied Polymer Sci

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“…In order to achieve improved mechanical performance, numerous scholars have carried out a series of studies. Zhang et al [29] prepared oxidized starch using an oxidant and successfully utilized GLY as a plasticizer to create thermoplastic oxidized starch with favorable rheology and toughness. The study revealed the formation of new hydrogen bonds between the plasticizer, oxidant, and starch, resulting in a combination of oxidation and plasticization effects.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Starch−Based Packaging Materials: Optimization of Plasticizers and Process Parameters

Wu,

Tang,

Guo

et al. 2023

Materials

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In order to actively promote green production and address these concerns, there is an urgent need for new packaging materials to replace traditional plastic products. Starch−based packaging materials, composed of starch, fiber, and plasticizers, offer a degradable and environmentally friendly alternative. However, there are challenges related to the high crystallinity and poor compatibility between thermoplastic starch and fibers, resulting in decreased mechanical properties. To address these challenges, a novel approach combining plasticizer optimization and response surface method (RSM) optimization has been proposed to enhance the mechanical properties of starch−based packaging materials. This method leverages the advantages of composite plasticizers and process parameters. Scanning electron microscopy and X-ray crystallography results demonstrate that the composite plasticizer effectively disrupts the hydrogen bonding and granule morphology of starch, leading to a significant reduction in crystallinity. Fourier transform infrared spectroscopy results show that an addition of glycerol and D−fructose to the starch can form new hydrogen bonds between them, resulting in an enhanced plasticizing effect. The optimal process parameters are determined using the RSM, resulting in a forming temperature of 198 °C, a forming time of 5.4 min, and an AC content of 0.84 g. Compared with the non−optimized values, the tensile strength increases by 12.2% and the rebound rate increases by 8.1%.

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Exploring the role of pullulan in the process of potato starch film formation

Liu

Yang

Fan

et al. 2020

Carbohydrate Polymers

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Effect of Crystal Structure and Hydrogen Bond of Thermoplastic Oxidized Starch on Manufacturing of Starch-Based Biomass Composite

Cited by 8 publications

References 26 publications

A synthesis of post‐esterified oxidized starch accompanied with physicochemical property analysis and esterification reaction condition optimization

A synthesis of post‐esterified oxidized starch accompanied with physicochemical property analysis and esterification reaction condition optimization

Enhancing Starch−Based Packaging Materials: Optimization of Plasticizers and Process Parameters

Exploring the role of pullulan in the process of potato starch film formation

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