Reinforcement of poly(vinyl alcohol) hydrogel with halloysite nanotubes as potential biomedical materials

Azmi, Syuhada; Razak, Saiful Izwan Abd; Kadir, Mohammed Rafiq Abdul; Iqbal, Nida; Hassan, Rohayanti; Nayan, Nadirul Hasraf Mat; Wahab, Abdul Hadi Abdul; Shaharuddin, Shahrulzaman

doi:10.1080/1539445x.2016.1242500

Cited by 49 publications

(32 citation statements)

References 35 publications

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“…It is suggested that the smooth surfaces of PVA/HNT bionanocomposites remain with the incorporation of HNTs at relatively low HNT contents, owing to their uniform dispersion. Such a finding is consistent with PVA/HNT hydrogels mentioned elsewhere [37]. At the low HNT content of 3 wt %, the smooth surfaces of PVA/HNT bionanocomposites can also be ascribed to the combination of strong interactions and good compatibility between HNTs and PVA matrices.…”

Section: Topographic Surface Morphology and Roughnesssupporting

confidence: 91%

The Role of Nanoparticle Shapes and Structures in Material Characterisation of Polyvinyl Alcohol (PVA) Bionanocomposite Films

Mousa

Dong

2020

Polymers

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Three different types of nanoparticles, 1D Cloisite 30B clay nanoplatelets, 2D halloysite nanotubes (HNTs), and 3D nanobamboo charcoals (NBCs) were employed to investigate the impact of nanoparticle shapes and structures on the material performance of polyvinyl alcohol (PVA) bionanocomposite films in terms of their mechanical and thermal properties, morphological structures, and nanomechanical behaviour. The overall results revealed the superior reinforcement efficiency of NBCs to Cloisite 30B clays and HNTs, owing to their typical porous structures to actively interact with PVA matrices in the combined formation of strong mechanical and hydrogen bondings. Three-dimensional NBCs also achieved better nanoparticle dispersibility when compared with 1D Cloisite 30B clays and 2D HNTs along with higher thermal stability, which was attributed to their larger interfacial regions when characterised for the nanomechanical behaviour of corresponding bionanocomposite films. Our study offers an insightful guidance to the appropriate selection of nanoparticles as effective reinforcements and the further sophisticated design of bionanocomposite materials.

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Section: Topographic Surface Morphology and Roughnesssupporting

confidence: 91%

The Role of Nanoparticle Shapes and Structures in Material Characterisation of Polyvinyl Alcohol (PVA) Bionanocomposite Films

Mousa

Dong

2020

Polymers

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“…In the previous study, the PVA hydrogel is regarded as a kind of porous material with many water components that can be used in biomedical areas [35]. While the load was applied, the water in its 3D space was pushed out and deformation increased.…”

Section: Discussionmentioning

confidence: 99%

The Effects of Surface Mechanical Deformation and Bovine Serum Albumin on the Tribological Properties of Polyvinyl Alcohol Hydrogel as an Artificial Cartilage

Feng

Zhang

Wang

et al. 2017

Advances in Materials Science and Engineering

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e mechanical and tribological properties of polyvinyl alcohol hydrogel as an arti cial cartilage were studied under water and bovine serum albumin-lubricated sliding conditions. e frictional properties of the polyvinyl alcohol hydrogel were investigated via reciprocating frictional tests. e e ect of surface mechanical deformation on the tribological properties of the polyvinyl alcohol hydrogel as an arti cial cartilage was studied by concurrently recording the z-axis displacement and friction coe cient time. ree di erent factors were chosen including load, speed, and lubrication. e results showed that the albumin solution could reverse the trend in the coe cient of friction in tests at di erent loading levels. ere was no improvement in the friction condition in albumin at low speeds. However, when the speed was increased to 2 Hz, the coe cient of friction was signi cantly reduced. Wear testing was also conducted, and wear tracks were found on the sample surface. e results also showed that even though the surface deformation could recover as the water phase of the porous structure recovered, the coe cient of friction continued to increase simultaneously. is relationship between mechanical and frictional tests indicated that biphasic lubrication e ects may not be the only dominant factor underlying the excellent friction properties of polyvinyl alcohol hydrogel.

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“…The networktethered SBA played an important role in restricting the movement of polymeric chains, changing diffusion characteristics of water into HGs. The reduced water absorption capacity can be related to interactions between SBA and polymers, which was also observed in HGs with included clay-minerals (Azmi et al, 2016). It was also observed that SBA-15 M and SBA-16 M can act as a hydrophobic cross-linking agent, thus reducing water absorption (Torres, Urbano, Campos, & Rivas, 2015).…”

Section: Swelling Kineticsmentioning

confidence: 79%

Bionanocomposites based on mesoporous silica and alginate for enhanced drug delivery

Lima

Kupfer

Moisés

et al. 2018

Carbohydrate Polymers

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This work reports the preparation, the characterization and the prednisolone release profile of biocompatible hydrogel nanocomposites containing mesoporous silica (SBA) and alginate as a biomaterial for enhanced drug delivery with reduced burst effect and improved mechanical properties. Such systems, which were prepared using specific SBA/alginate-crosslinking chemistry, exhibited interconnecting pore hybrid network owing to both mesoporous silica and hydrogel characteristics. Activated SBA was shown to be a determinant factor in inhibiting initial burst by nearly 90% and the drug was released with minimal burst kinetics. The nanoparticles reduced the movements of polymer chains, affecting macromolecular relaxation, and the distribution of mesoporous silica within the hydrogel made drug release into surrounding liquid less favorable. The proposed systems are biocompatible with human immortalized RWPE-1 prostatic epithelial cells. This report offers an approach of up-to-date interest for the development of advanced biomaterials for further physiological and pathological applications.

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Reinforcement of poly(vinyl alcohol) hydrogel with halloysite nanotubes as potential biomedical materials

Cited by 49 publications

References 35 publications

The Role of Nanoparticle Shapes and Structures in Material Characterisation of Polyvinyl Alcohol (PVA) Bionanocomposite Films

The Role of Nanoparticle Shapes and Structures in Material Characterisation of Polyvinyl Alcohol (PVA) Bionanocomposite Films

The Effects of Surface Mechanical Deformation and Bovine Serum Albumin on the Tribological Properties of Polyvinyl Alcohol Hydrogel as an Artificial Cartilage

Bionanocomposites based on mesoporous silica and alginate for enhanced drug delivery

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