Synthesis, characterization and hydrophobicity of silylated starch nanocrystal

Wei, Benxi; Sun, Binghua; Bao, Zhenan; Long, Jie; Chen, Long; Tian, Yaoqi

doi:10.1016/j.carbpol.2015.10.025

Cited by 50 publications

(32 citation statements)

References 29 publications

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“…The hydroxyl groups of starch and glycerol in HAGS film preferably formed hydrogen bonds with water (Tan, Su, Zhang, & Huang, 2015;Wei et al, 2016). The HAGS-AEEPU film showed a significant increase (p<0.05) of CA to 115˚ (θ 10s ) in the case of HAGS/AEEPU at 50:50 ratio.…”

Section: Hydrophobicity Of Hags-aeepu Filmsmentioning

confidence: 95%

Flexible starch-polyurethane films: Effect of mixed macrodiol polyurethane ionomers on physicochemical characteristics and hydrophobicity

Tai

Adhikari

Shanks

et al. 2018

Carbohydrate Polymers

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Section: Hydrophobicity Of Hags-aeepu Filmsmentioning

confidence: 95%

Flexible starch-polyurethane films: Effect of mixed macrodiol polyurethane ionomers on physicochemical characteristics and hydrophobicity

Tai

Adhikari

Shanks

et al. 2018

Carbohydrate Polymers

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“…Wei et al have used hexadecyltrimethoxysilane (HDS), a siloxane with a long hydrocarbon chain, to prepare hydrophobic modified starch nanocrystals (SNC). The use of long side hydrocarbon chain of HDS was expected to provide an efficient and simple way to improve the hydrophobicity of SNC [60]. The SNC were prepared by acid hydrolysis of waxy maize starch according to the method of Angellier et al [61].…”

Section: Starch Based Adhesives and Sealantsmentioning

confidence: 99%

“…Reaction scheme between hexadecyltrimethoxysilane (HDS) and starch nanocrystals (SNC). Adapted from [60], with permission from Elsevier and Copyright Clearance Center, 2016.…”

Section: Figurementioning

confidence: 99%

Brief Overview on Bio-Based Adhesives and Sealants

et al. 2019

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Adhesives and sealants (AS) are materials with excellent properties, versatility, and simple curing mechanisms, being widely used in different areas ranging from the construction to the medical sectors. Due to the fast-growing demand for petroleum-based products and the consequent negative environmental impact, there is an increasing need to develop novel and more sustainable sources to obtain raw materials (monomers). This reality is particularly relevant for AS industries, which are generally dependent on non-sustainable fossil raw materials. In this respect, biopolymers, such as cellulose, starch, lignin, or proteins, emerge as important alternatives. Nevertheless, substantial improvements and developments are still required in order to simplify the synthetic routes, as well as to improve the biopolymer stability and performance of these new bio-based AS formulations. This environmentally friendly strategy will hopefully lead to the future partial or even total replacement of non-renewable petroleum-based feedstock. In this brief overview, the general features of typical AS are reviewed and critically discussed regarding their drawbacks and advantages. Moreover, the challenges faced by novel and more ecological alternatives, in particular lignocellulose-based solutions, are highlighted.

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“…[13] When the nanocrystals were modified, however, the size of the aggregates decreased due to the repulsive charges that overcome the attraction of other forces (Van der Waals and hydrogen bonds between nanocrystals). [14] Zeta potential is the main indicator of the presence of superficial charges and is related with colloidal stability. The higher the absolute value, the higher the particle repulsion.…”

Section: Particle Size and Zeta Potentialmentioning

confidence: 99%

Pickering Emulsions Produced with Starch Nanocrystals from Cassava (Manihot esculenta Crantz), Beans (Phaseolus vulgaris L.), and Corn (Zea mays L.)

et al. 2020

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The objective of this study is to produce Pickering emulsions with starch nanocrystals from different starch sources. Bean starch is less susceptible to hydrolysis, followed by corn, and cassava starches. In both botanical sources the acid hydrolysis greatly reduce the amylose content in the nanoparticles. Oxidation increases the zeta potential of all the nanocrystals. In addition, the value of polydispersity decreases. A peak at 1,735 cm −1 is detected by means of mid-infrared spectroscopy, which is characteristic of the free carboxyl group (acid form-COOH), expected on oxidized starches. Cassava and corn starches as well as their nanocrystals have an A-type crystallinity pattern. For bean starch, the original C A-type crystallinity pattern remains for the non-oxidized nanocrystals but changes to A-type after oxidation. After hydrolysis, the relative crystallinity increases for nanocrystals, but decreases after oxidation. The exception is for bean starch that results in oxidized nanocrystals with higher relative crystallinity. In general, the oxidation of nanocrystals improves their emulsification index. The emulsification index is higher for the emulsions with larger amounts of oil, even though the average diameter of the droplets increases in this situation.

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Synthesis, characterization and hydrophobicity of silylated starch nanocrystal

Cited by 50 publications

References 29 publications

Flexible starch-polyurethane films: Effect of mixed macrodiol polyurethane ionomers on physicochemical characteristics and hydrophobicity

Flexible starch-polyurethane films: Effect of mixed macrodiol polyurethane ionomers on physicochemical characteristics and hydrophobicity

Brief Overview on Bio-Based Adhesives and Sealants

Pickering Emulsions Produced with Starch Nanocrystals from Cassava (Manihot esculenta Crantz), Beans (Phaseolus vulgaris L.), and Corn (Zea mays L.)

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