Stretchable and biodegradable chitosan-polyurethane-cellulose nanofiber composites as anisotropic materials

Shih, Yu-Feng; Lin, Shih‐Ho; Xu, Junpeng; Su, Chun‐Jen; Huang, Chih‐Feng; Hsu, Shan‐hui

doi:10.1016/j.ijbiomac.2022.123116

Cited by 9 publications

(3 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The degradable property of hydrogels is capable of providing sufficient space for tissue ingrowth, cell growth and cell rearrangement when implanted in organisms for a certain time. 40 The degradation of GelMA is similar both in vivo and in vitro . The early double bond remains stable, and GelMA gets degraded and absorbed as the network disintegrates.…”

Section: Resultsmentioning

confidence: 92%

Chlorogenic acid releasing microspheres enhanced electrospun conduits to promote peripheral nerve regeneration

Fang,

Jin,

et al. 2023

Biomater. Sci.

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 92%

Chlorogenic acid releasing microspheres enhanced electrospun conduits to promote peripheral nerve regeneration

Fang,

Jin,

et al. 2023

Biomater. Sci.

View full text Add to dashboard Cite

show abstract

“…Their mechanical properties have been cross-compared with the reported values in literature studies (Figure h and Table S1). − The composite films show not only high mechanical strength as cellulose films but also high elasticity as their hydrogels. The high elasticity is likely due to the amorphous nature of cellulose in the composite, where hydrogen bonding among cellulose strands and hydrated PAA with residual Zn 2+ ions can provide abundant sites to dissipate mechanical energy …”

Section: Resultsmentioning

confidence: 99%

Tough and Elastic Cellulose Composite Hydrogels/Films for Flexible Wearable Sensors

Yang,

Lu,

Zhu

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Cellulose and its composites, despite being abundant and sustainable, are typically brittle with very low flexibility/ stretchability. This study reports a solution processing method to prepare porous, amorphous, and elastic cellulose hydrogels and films. Native cellulose dissolved in a water−ZnCl 2 mixture can form ionic gels through in situ polymerization of acrylic acid (AA) to poly(acrylic acid) (PAA). The addition of up to 30 vol % AA does not change the solubility of cellulose in the water−ZnCl 2 mixture. After polymerization, the formation of interpenetrated networks, resulting from the chemical cross-linking of PAA and the ionic/ coordination binding among cellulose/PAA and ZnCl 2 , gives rise to strong, transparent, and ionically conductive hydrogels. These hydrogels can be used for wearable sensors to detect mechanical deformation under stretching, compression, and bending. Upon removal of ZnCl 2 and drying the gels, semitransparent amorphous cellulose composite films can be obtained with a Young's modulus of up to 4 GPa. The rehydration of these films leads to the formation of tough, highly elastic composites. With a water content of 3− 10.5%, cellulose-containing films as strong as paper also show typical characteristics of elastomers with an elongation of up to 1300%. Such composite films provide an alternative solution to resolving the material sustainability of natural polymers without compromising their mechanical properties.

show abstract

“…x = value of a single observation; n = number of observations; and x = arithmetic mean of the set of observations. Material testing included optical microscopy, compression, density, hardness, and material characteristics testing using the FTIR method [45,[51][52][53][54]. The compression speed was set at 2.5 mm/minute until the yield point was reached or the specimen had been compressed to 13% of the initial thickness before compression.…”

Section: Reaction Stages Materials Formulamentioning

confidence: 99%

Excellent Hybrid Polyurethane-Graphite Filler Micro Powder as a Lightweight Structure

Nugroho,

Alandro,

Herianto

et al. 2023

J. Compos. Sci.

View full text Add to dashboard Cite

Weight plays a significant role in the automotive and aerospace fields due to the demand of lightweight material structures. A lighter body in weight (BIW) and in structure can reduce fuel consumption, lessen emissions, and support the SDGs 9, 11, 12, and 13. Therefore, polyurethane (PU) foam is suitable for applications that require low weight. The characteristics of hybrid polyurethane-graphite micro were successfully evaluated in this study. Several tests have been used to characterize these structures, such as, compression, hardness, density, surface evaluation, and FTIR analysis. The results showed that the expansion and shrinkage variations lead to different shapes at specific ratios. Compression tests show that the highest value occurred at 0.84 kN, with a 4:1 ratio found in pure PU foam without any reinforcement. PU foam with 2% graphite filler showed the highest results at the 4:1 ratio with a value of 0.45 kN. Furthermore, the highest hardness test result was 37.7 SHD. Density testing indicates that the highest value is obtained from specimens with a 4:1 ratio of 0.077 g/cm3. FTIR testing reveals that adding graphite as a filler alters the chemical bonds during the formation of solid PU foam. Surface observations show that adding graphite as a filler influences the variation in material structure formation. All the evaluation has tended to conclude the present combination as suitable for lightweight structures applications.

show abstract

Stretchable and biodegradable chitosan-polyurethane-cellulose nanofiber composites as anisotropic materials

Cited by 9 publications

References 58 publications

Chlorogenic acid releasing microspheres enhanced electrospun conduits to promote peripheral nerve regeneration

Chlorogenic acid releasing microspheres enhanced electrospun conduits to promote peripheral nerve regeneration

Tough and Elastic Cellulose Composite Hydrogels/Films for Flexible Wearable Sensors

Excellent Hybrid Polyurethane-Graphite Filler Micro Powder as a Lightweight Structure

Contact Info

Product

Resources

About