enhance the mechanical performance of polyacrylamide

Enhance the mechanical performance of polyacrylamide ...

Abstract Polyacrylamide (PAM)–silica nanocomposite hydrogels with enhanced mechanical performance were synthesized by in situ polymerization of acrylamide in the presence of colloidal silica nanoparticles. Two kinds of silica particle dispersions with

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Using Dynamic Bonds to Enhance the Mechanical Performance: F ... 簡

Polymeric materials combining good mechanical performances with self-healing ability and malleability have attracted dramatic attention, but it presently remains a challenge for the facile fabrication of such high-performance materials, not to mention the atomic-level ...

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Enhanced mechanical performance of xylan-based composite ... ...

In order to enhance the mechanical and hydraulic properties of a bentonite-sand mixture, an anionic and a cationic polyacrylamide with a content of 1, 2, 5, 10 and 15% respectively were added to ...

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Modifying effect of anionic polyacrylamide dose for cement-b ...

Ye L,Qiu D. Enhance the mechanical performance of polyacrylamide hydrogel by aluminium-modified colloidal silica[J]. Colloid Surface A,2014,447(1):103-110. APA 叶蕾,&邱东.(2014).Enhance the mechanical performance of polyacrylamide hydrogel by,447(1

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Modifying SnO2 with Polyacrylamide to Enhance the Performanc ...

Modification of the charge transport layers is an effective way to improve charge transport and performance of perovskite solar cells (PSCs). The ions in the ionic compounds used for the modification of SnO2 may migrate into the perovskite layer, which harms the stability of PSCs. In this work, a low-cost, water-soluble nonionic polymer polyacrylamide (PAM) is used to modify SnO2. The addition ...

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Determination of mechanical and hydraulic properties of poly ...

increase in the swell index of the bentonite in various studies (Liuetal.2012;Razakamanantsoaetal.2012;Ozhan2018b). The effect of a polymer on the mechanical and hydraulic properties of sand Polymer addition also resulted in an enhancement in the hy

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Dramatic improvement in the mechanical properties of polydop ...

crosslinking and tissue adhesion. Therefore, amino groups in biological tissues can react with catechol groups in hydrogels to form imine bonds at the interface.36 Polyacrylamide (PAM), an easy-to-fabricated and low-cost hydrogel with abundant active –NH 2 group, is feasible for

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The effect of swelling/deswelling cycles on the mechanical b ...

The WC in hydrogels significantly influences their mechanical properties. Li et al. [29] explored the effect of WC on the elastic modulus and found that the water loss induced an increase, while the water absorption induced a decrease in the elastic modulus. ...

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Mechanical properties of graphene oxide polyacrylamide compo ...

itself does not possess such characteristics. The mechanical properties of the GO/ polyvinylalcohol (PVA) were observed to be improved [9], compared to pure PVA hydrogels, by 132% increase in tensile strength with the addition of 0.8 wt% of GO.

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Frontal polymerization of acrylamide/GelMA/gelatin hydrogels ...

3D matrix. In previous research, polyacrylamide-based hydro-gels are cross-linked via a chemical cross-linker i.e. N,N0-meth-ylenebisacrylamide (MBA).17 However, the corresponding polyacrylamide hydrogel was poor in its electrical conductivity and mechanical

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Dramatic improvement in the mechanical properties of polydop ...

The adhesive hydrogel is supposed to be the ideal toughening material for the weak hAM, and its intrinsic mechanical property plays a vital role in the final toughness performance. Fig. 5a shows that the neat PAM hydrogel can be stretched from an initial 5 cm to a breaking length of 9.5 cm with a corresponding elongation of 90%. ...

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Why are hyperbranched molecules a novel crosslinker for polyacrylamide/chitosan (PCH) hydrogels?

The homogenized porous structure and improved interactions of networks contributed to the enhanced mechanical properties. Hyperbranched (HSi) molecules with tunable molecular structure were synthesized and served as a novel crosslinker for fabricating polyacrylamide/chitosan (PCH) hydrogels.

Can hyperbranched polysiloxane be used as a crosslinker for polyacrylamide/chitosan hydrogel?

4. Conclusions In summary, a series of hyperbranched polysiloxane (HSi) with tunable molecular structure were designed, synthesized and used as efficient crosslinker to fabricate polyacrylamide/chitosan (PCH) hydrogels.

Can natural polymers improve the mechanical properties of hydrogels?

Owing to unique physicochemical properties, the introduction of natural polymers into hydrogels has been proved to improve the mechanical properties of hydrogels via interactions (hydrogen bonding or chain entanglement) between natural polymers (e.g. sodium alginate and cellulose) and polymer networks [39, 40 ].

What is hyperbranched polysiloxane?

Hyperbranched polysiloxane (HSi) with tunable molecular structures were designed and synthesized. The polyacrylamide/chitosan hydrogels crosslinked by HSi were fabricated. Benefiting by bi-functional groups of HSi, mechanical properties of hydrogels is superior to that of HSi with single group.