Biodegradation behaviour of PMMA/cellulose nanocomposites prepared by in-situ polymerization and ex-situ dispersion methods

Maiti, Sonakshi; Sain, Sunanda; Ray, Dipa; Mitra, Debasis

doi:10.1016/j.polymdegradstab.2012.11.011

Cited by 32 publications

(15 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nevertheless, the only reason for fluctuations in biodegradation of the BC:PMMA bandages cannot be explained solely with the pH factor. Dipole–dipole attraction between the BC and PMMA molecules are also an important factor and this can result in higher degradation rates, which will eventually lead to increased weight loss . This can justify the extreme weight loss of the BC:PMMA bandages compared to other studies and against the well accepted reputation of the low biodegradability of PMMA scaffolds.…”

Section: Resultsmentioning

confidence: 99%

Co‐Culture of Keratinocyte‐Staphylococcus aureus on Cu‐Ag‐Zn/CuO and Cu‐Ag‐W Nanoparticle Loaded Bacterial Cellulose:PMMA Bandages

Altun

Aydoğdu

Crabbe-Mann

et al. 2018

Macro Materials & Eng

View full text Add to dashboard Cite

Pressurized gyration and its sister processes are novel methods to produce polymeric fibers. Potential applications for such fibers include wound dressings, tissue engineering scaffolds, and filters. This study reports on a pressurized gyration technique that employs pressured N2 gas to prepare biocompatible wound dressing bandages from bacterial cellulose and poly (methylmethacrylate) polymer blended with alloyed antimicrobial nanoparticles. Resulting bandages are manufactured with high product yield and characterized for their chemical, physical, and mechanical properties. Increased density in solutions with additional antimicrobial nanoparticles results in increased fiber diameters. Also, addition of antimicrobial nanoparticles enhances ultimate tensile strength and Young's modulus of the bandages. Typical molecular bonding in the bandages is confirmed by Fourier‐transform infrared spectroscopy, with peaks that have higher intensity and narrowing points being caused by additional antimicrobial nanoparticles. More so, the cellular response to the bandages and the accompanying antimicrobial activity are studied in detail by in vitro co‐culture of Staphylococcus aureus and keratinocytes. Antimicrobial nanoparticle‐loaded bandage samples show increased cell viability and bacteria inhibition during co‐culture and are found to have a promising future as epidermal wound dressing materials.

show abstract

Section: Resultsmentioning

confidence: 99%

Co‐Culture of Keratinocyte‐Staphylococcus aureus on Cu‐Ag‐Zn/CuO and Cu‐Ag‐W Nanoparticle Loaded Bacterial Cellulose:PMMA Bandages

Altun

Aydoğdu

Crabbe-Mann

et al. 2018

Macro Materials & Eng

View full text Add to dashboard Cite

show abstract

“…To date, CNCs have been successfully used as reinforcing agents in some hydrosoluble polymer matrices, and a few hydrophobic polymers. However, using CNCs in commodity polymers such as polyethylene and PMMA has been more challenging. PMMA is a relatively common thermoplastic used as a glass substitute due to its optical transparency, thermal stability, low density, and high impact strength .…”

Section: Introductionmentioning

confidence: 99%

Poly(methyl methacrylate)‐grafted cellulose nanocrystals: One‐step synthesis, nanocomposite preparation, and characterization

et al. 2016

View full text Add to dashboard Cite

Cellulose nanocrystals (CNCs) are ideal reinforcing agents for polymer nanocomposites because they are lightweight and nano‐sized with a large aspect ratio and high elastic modulus. To overcome the poor compatibility of hydrophilic CNCs in non‐polar composite matrices, we grafted poly(methyl methacrylate) (PMMA) from the surface of CNCs using an aqueous, one‐pot, free radical polymerization method with ceric ammonium nitrate as the initiator. The hybrid nanoparticles were characterized by CP/MAS NMR, X‐ray photoelectron spectroscopy, infrared spectroscopy, contact angle, thermogravimetric analysis, X‐ray diffraction, and atomic force microscopy. Spectroscopy demonstrates that 0.11 g/g (11 wt %) PMMA is grafted from the CNC surface, giving PMMA‐g‐CNCs, which are similar in size and crystallinity to unmodified CNCs but have an onset of thermal degradation 45 °C lower. Nanocomposites were prepared by compounding unmodified CNCs and PMMA‐g‐CNCs (0.0025–0.02 g/g (0.25–2 wt %) loading) with PMMA using melt mixing and wet ball milling. CNCs improved the performance of melt‐mixed nanocomposites at 0.02 g/g (2 wt %) loading compared to the PMMA control, while lower loadings of CNCs and all loadings of PMMA‐g‐CNCs did not. The difference in Young's modulus between unmodified CNC and polymer‐grafted CNC composites was generally insignificant. Overall, ball‐milled composites had inferior mechanical and rheological properties compared to melt‐mixed composites. Scanning electron microscopy showed aggregation in the samples with CNCs, but more pronounced aggregation with PMMA‐g‐CNCs. Despite improving interfacial compatibility between the nanoparticles and the matrix, the effect of PMMA‐g‐CNC aggregation and decreased thermal stability dominated the composite performance.

show abstract

“…The surface roughness of the biodegraded IPC films was more prominent than that of the degraded EPC films which was corroborated with the higher weight loss of the IPC films after composting. In continuation to this work [109], Sain et al [110] reported the effects of maleic anhydride (MA) and methylmethacrylate (MMA) modified cellulose micro and nanofibres (MACNF and MCNF respectively) on the biodegradation behaviour of PMMA/cellulose nanocomposites. The biodegradation behaviour of the MA and MMA modified nanocellulose reinforced PMMA films (designated here as IM and IMM respectively) was studied by soil burial method in two types of soils (Soil A and Soil B).…”

Section: Nc/polyacrylatementioning

confidence: 85%

“…Maiti et al [109] studied the biodegradation behaviour of both in situ and ex situ formed PMMA/cellulose nanocomposites (IPC and EPC respectively) in a simulated aerobic compost environment for 60 days. IPC showed higher weight loss compared to that of EPC and unreinforced PMMA.…”

Section: Nc/polyacrylatementioning

confidence: 99%

In situ processing of cellulose nanocomposites

Ray

Sain

2016

Composites Part A: Applied Science and Manufacturing

Self Cite

View full text Add to dashboard Cite

Biodegradation behaviour of PMMA/cellulose nanocomposites prepared by in-situ polymerization and ex-situ dispersion methods

Cited by 32 publications

References 23 publications

Co‐Culture of Keratinocyte‐Staphylococcus aureus on Cu‐Ag‐Zn/CuO and Cu‐Ag‐W Nanoparticle Loaded Bacterial Cellulose:PMMA Bandages

Co‐Culture of Keratinocyte‐Staphylococcus aureus on Cu‐Ag‐Zn/CuO and Cu‐Ag‐W Nanoparticle Loaded Bacterial Cellulose:PMMA Bandages

Poly(methyl methacrylate)‐grafted cellulose nanocrystals: One‐step synthesis, nanocomposite preparation, and characterization

In situ processing of cellulose nanocomposites

Contact Info

Product

Resources

About