A Novel Method to Control the Elution Behavior of PVA Cast Gels

Sasaki, Shigeo; Suzuki, Atsushi

doi:10.1002/masy.201500058

Cited by 3 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Drying speed of sample D was lower than that of sample E because of higher relative humidity. It is indicated that low-speed drying leads to the growth of micro-crystalline structure and reinforcement of cross-linking in PVA-CD gel [20]. It is considered that extent of cross-linking in sample D is higher than that of sample E. If excess cross-linking is applied, protruding of PVA molecules was reduced and superficial hydration layer is not sufficiently formed.…”

Section: Resultsmentioning

confidence: 99%

“…The drying conditions in the preparation of PVA-hybrid gels used in this study are listed in Table 1. It was reported that temperature and relative humidity during drying process are key factors for the formation of cross-linking and micro-crystalline structure of PVA-CD gel [19][20][21][22]. If we set the high temperature at the first step during drying process, the shape of PVA-CD and PVA-hybrid gels become undulated and we cannot use these specimens for friction test.…”

Section: Preparation Of Pva-hybrid Gelmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of Lubrication Property of Poly(vinyl alcohol) Hybrid Gel for Artificial Articular Cartilage

et al. 2016

Self Cite

View full text Add to dashboard Cite

Poly (vinyl alcohol) (PVA) hydrogel is the candidate material for artificial cartilage. PVA hydrogels prepared by hybrid method of freeze-thawing (FT) and cast-drying (CD) method (PVA-hybrid gel) were developed, and lubrication property of PVA-hybrid gel was evaluated. Sliding pairs of an ellipsoidal PVA hydrogel and a flat glass plate were tested in reciprocating friction test. PVA-hybrid gels were prepared by temperature (T) and humidity (H) controlled drying process. Friction of PVA-hybrid gel prepared by drying process at T of 8°C and H of 80%RH gradually increased. PVA-hybrid gel prepared by drying process at T of 8°C and H of 50%RH showed low friction coefficient of 0.013 but it gradually increased with increase of sliding distance and surface damage was progressed. When the additional drying process at T of 20°C and H of 40%RH after the drying process at T of 8°C and H of 50%RH was provided, PVA-hybrid gel showed extremely low friction coefficient such as 0.006 and wear of this hybrid gel was slight. The additional drying process contributes to obtaining the surface layer of PVA-hybrid gel with low friction and low wear.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Preparation Of Pva-hybrid Gelmentioning

confidence: 99%

Evaluation of Lubrication Property of Poly(vinyl alcohol) Hybrid Gel for Artificial Articular Cartilage

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…83,84 The degree of crystallinity is defined as the ratio of the volume (or weight) of PVA microcrystallines to the total volume (or weight) of PVA, 28 which can be obtained using a range of different techniques. 85,86 In this article, the crystallinity was measured 87 using DSC (DSC8000; PerkinElmer) and a thermogravimetric analyzer (TGA; TGA4000; PerkinElmer). Two samples were cut from each dried sample.…”

Section: Experimental and Typical Properties Of Pva Gelsmentioning

confidence: 99%

Swelling and mechanical properties of physically crosslinked poly(vinyl alcohol) hydrogels

Suzuki

Sasaki

2015

Proc Inst Mech Eng H

Self Cite

View full text Add to dashboard Cite

Physically crosslinked poly(vinyl alcohol) gels are versatile biomaterials due to their excellent biocompatibility. In the past decades, physically crosslinked poly(vinyl alcohol) and poly(vinyl alcohol)-based hydrogels have been extensively studied for biomedical applications. However, these materials have not yet been implemented due to their mechanical strength. Physically crosslinked poly(vinyl alcohol) gels consist of a swollen amorphous network of poly(vinyl alcohol) physically crosslinked by microcrystallites. Although the mechanical properties can be improved to some extent by controlling the distribution of microcrystallites on the nano- and micro-scales, enhancing the mechanical properties while maintaining high water content remains very difficult. It may be technologically impossible to significantly improve the mechanical properties while keeping the gel's high water absorbance ability using conventional fabrication methods. Physical and chemical understandings of the swelling and mechanical properties of physically crosslinked poly(vinyl alcohol) gels are considered here; some promising strategies for their practical applications are presented. This review focuses more on the recent studies on swelling and mechanical properties of poly(vinyl alcohol) hydrogels, prepared using only poly(vinyl alcohol) and pure water with no other chemicals, as potential biomedical materials.

show abstract

PVA-BA/PEG hydrogel with bilayer structure for biomimetic articular cartilage and investigation of its biotribological and mechanical properties

et al. 2020

View full text Add to dashboard Cite

A Novel Method to Control the Elution Behavior of PVA Cast Gels

Cited by 3 publications

References 15 publications

Evaluation of Lubrication Property of Poly(vinyl alcohol) Hybrid Gel for Artificial Articular Cartilage

Evaluation of Lubrication Property of Poly(vinyl alcohol) Hybrid Gel for Artificial Articular Cartilage

Swelling and mechanical properties of physically crosslinked poly(vinyl alcohol) hydrogels

PVA-BA/PEG hydrogel with bilayer structure for biomimetic articular cartilage and investigation of its biotribological and mechanical properties

Contact Info

Product

Resources

About