Designing Starch‐Based Nanospheres to Make Hydrogels with High Mechanical Strength

Tan, Ying; Wang, Pixin; Xu, Kun; Li, Wenbo; An, Hailong; Li, Linglu; Liu, Chang; Dong, Lisong

doi:10.1002/mame.200900182

Cited by 36 publications

(17 citation statements)

References 23 publications

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“…The detailed mechanism for this synthesis is shown in Figure . Some of the graft copolymers of gum polysaccharides synthesized without using crosslinking agents are summarized in Table , along with their applications …”

Section: Graft Copolymerization Of Gum Polysaccharidesmentioning

confidence: 99%

Recent Progress on the Design and Applications of Polysaccharide‐Based Graft Copolymer Hydrogels as Adsorbents for Wastewater Purification

Mittal

Ray

Okamoto

2016

Macro Materials & Eng

123

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Gum polysaccharides are one of the most abundant bio‐based polymers. They are generally derived from plants as exudates or from microorganisms and have diverse applications in many industries, especially in the food industries where they are used as emulsifiers and thickeners. In their natural form, gum polysaccharides have poor mechanical and physical properties; therefore, they are frequently modified with various synthetic monomers such as acrylamide and acrylic acid using graft copolymerization. Graft copolymerization is one of the most trusted and widely used synthetic methods for the modification of gum polysaccharides. Gum polysaccharides modified in this way have improved mechanical and physicochemical properties. Furthermore, gum polysaccharides contain a variety of functional groups, for example, carboxylic acid and hydroxyl groups; therefore, they have been used extensively as adsorbents for the removal of different impurities from wastewater such as toxic heavy metal cations and synthetic dyes. Here, the chemical and physical properties of gum polysaccharides, different methods of graft copolymerization, and the use of graft copolymer gum‐polysaccharide‐based hydrogels are reviewed in detail for the removal of toxic heavy metal cations and synthetic dyes from aqueous solutions.

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Section: Graft Copolymerization Of Gum Polysaccharidesmentioning

confidence: 99%

Recent Progress on the Design and Applications of Polysaccharide‐Based Graft Copolymer Hydrogels as Adsorbents for Wastewater Purification

Mittal

Ray

Okamoto

2016

Macro Materials & Eng

123

View full text Add to dashboard Cite

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“…However, traditional synthetic hydrogels, which have low mechanical properties due to a heterogeneous network structure, have limited application 2. To date, research regarding the fabrication of hydrogels with optimized network structures to enhance the mechanical properties (e.g., double‐network (DN) hydrogels,3 inverted DN hydrogels,4 nano‐composite hydrogels,5 slide‐ring hydrogels,6 cyclic hydrogels,7 dendrimer/clay composite hydrogels,8 hydrogen bonding hydrogels,9 and hydrophobic associated micelles acted as physical crosslinking points in the network hydrogels10] is underway. Inspired by polyurethanes, which are produced by the polyaddition reaction of a polyisocyanate with a polyalcohol (polyol) in the presence of a catalyst and other additives, then the introduction of a hard segment into hydrogels is a possible way to increase their mechanical properties 11.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Reinforced Poly(ethylene glycol)/Chitosan Hydrogel as Wound Dressing Materials

Chen

Tsao

Chang

et al. 2012

Macro Materials & Eng

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PEG is used to reinforce chitosan‐based hydrogels through the formation of ester and amide linkages. The reinforced PEG/chitosan (RPC) hydrogels exhibit significant enhancements in tensile modulus and elongation compared with neat chitosan. Other properties are thoroughly investigated and indicate that the physicochemical and in vitro degradation properties of the RPC hydrogels depend on the amount and molecular weight of the PEG. The RPC hydrogels can control evaporative water loss at a suitable rate to maintain a moist environment. In terms of in vitro biological properties, 3T3 fibroblasts show good viability with the RPC hydrogels, which indicates that the RPC hydrogels may be used as wound dressing materials.

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“…Therefore, there is a need for slow swelling rate and good deformability that can overcome blocking near bore and migrate into the deep reservoirs. To improve the mechanical strength of traditional hydrogels, researchers have made efforts to develop chemically modified materials with novel structures, such as topological gels [14], nanocomposite gel [15][16][17][18], double network gel [19], polymer microsphere composite hydrogel [20,21], hydrophobic association hydrogel [22,23], and tetrapolyethylene glycol hydrogel [24].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Hydrophobic-Associated Microspheres for Deep Profile Control in Offshore Oilfields

Jin

et al. 2018

International Journal of Polymer Science

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Microspheres have excellent sealing performances such as injectivity, bridging-off, deep migration, and deformation performances, but their plugging effects are limited by the fast swelling rate and poor viscoelasticity. In this study, we synthesized a novel modified microsphere with polymerizable surfactant monomers and cationic monomers. We investigated the influence factors on the swelling performance and rheological properties of the microspheres and explored the ways to improve the plugging performance of hydrophobic-associating microspheres. The association behaviors in aqueous media of poly(acrylamide-comethacry loyloxyethyl trimethyl ammonium chloride-co-n-dodecyl poly(etheroxy acrylate) P(AM-DMC-DEA) are proven to be mediated by the DEA content. Moreover, the hydrophobic association interaction has a strong effect on the performance of microspheres such as swelling properties, the rheological performance, and plugging properties. The swelling properties of microsphere studies exhibited the slow swelling rate. The rheological performance measurements showed significant improvements; yield stress, and creep compliance increased rapidly from 404 to 2060 Pa and 3.89 × 10 −4 to 1.41 × 10 −2 1/Pa, respectively, with DEA content in microspheres rising from 0.0% to 0.22%. The plugging properties of microspheres were enhanced by the slow swelling performance and good viscoelasticity.

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Designing Starch‐Based Nanospheres to Make Hydrogels with High Mechanical Strength

Cited by 36 publications

References 23 publications

Recent Progress on the Design and Applications of Polysaccharide‐Based Graft Copolymer Hydrogels as Adsorbents for Wastewater Purification

Recent Progress on the Design and Applications of Polysaccharide‐Based Graft Copolymer Hydrogels as Adsorbents for Wastewater Purification

Synthesis and Characterization of Reinforced Poly(ethylene glycol)/Chitosan Hydrogel as Wound Dressing Materials

Preparation and Characterization of Hydrophobic-Associated Microspheres for Deep Profile Control in Offshore Oilfields

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