scholarly journals Poly(methyl methacrylate): Covalent Functionalization of PMMA Surface with L‐3,4‐Dihydroxyphenylalanine (L‐DOPA) to Enhance its Biocompatibility and Adhesion to Corneal Tissue (Adv. Mater. Interfaces 1/2020)

2020 ◽  
Vol 7 (1) ◽  
pp. 2070001 ◽  
Author(s):  
Roholah Sharifi ◽  
Soudabe Mahmoudzadeh ◽  
Mohammad Mirazul Islam ◽  
Darrell Koza ◽  
Claes H. Dohlman ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Corneal Tissue ◽  
Covalent Functionalization ◽  
Poly Methyl Methacrylate ◽  
Pmma Surface

scholarly journals Covalent Functionalization of PMMA Surface with L‐3,4‐Dihydroxyphenylalanine (L‐DOPA) to Enhance its Biocompatibility and Adhesion to Corneal Tissue

2019 ◽  
Vol 7 (1) ◽  
pp. 1900767
Author(s):  
Roholah Sharifi ◽  
Soudabe Mahmoudzadeh ◽  
Mohammad Mirazul Islam ◽  
Darrell Koza ◽  
Claes H. Dohlman ◽  
...  
Keyword(s):  
Corneal Tissue ◽  
Covalent Functionalization ◽  
Pmma Surface

scholarly journals Shear Bond Strength and Optical Properties of Resin Composite - Layered Provisional Poly(methyl methacrylate) (PMMA)

2021 ◽  
Vol 15 (1) ◽  
pp. 176-183
Author(s):  
Juthatip Aksornmuang ◽  
Juckrapun Tiangtrong
Keyword(s):  
Optical Properties ◽  
Bond Strength ◽  
Methyl Methacrylate ◽  
Shear Bond Strength ◽  
Resin Composite ◽  
Bonding Agent ◽  
Control Group ◽  
Resin Composites ◽  
Poly Methyl Methacrylate ◽  
Pmma Surface

Aims: To compare the shear bond strength between resin composite and Poly(methyl methacrylate) (PMMA) with various bonding protocols and to evaluate the optical properties of resin composite - layered provisional Poly(methyl methacrylate) (PMMA). Materials and Methods: Eighty cylindrical shape specimens were fabricated from self-polymerized provisional Poly(methyl methacrylate) (PMMA) and they were randomly divided into eight groups. Poly(methyl methacrylate) (PMMA) was mixed and bonded onto the specimens as a positive control group. Resin composite was bonded to MMA-wetted surface without bonding agent as a negative control group. All remaining groups were bonded to resin composite using different bonding agents (Scothbond Universal, Luxatemp glaze&bond, and HC Primer) with and without MMA wetting. Shear bond strength testing was performed using a universal testing machine. Various shades of 0.5 mm-thick resin composites were layered onto 1.5 mm-thick PMMA both light and dark shade, with the most effective bonding protocol. Color differences between resin composite and – layered provisional Poly(methyl methacrylate) (PMMA) were measured using Spectrophotometer. Results: Bonding resin composite onto Poly(methyl methacrylate) (PMMA) using luxatemp glaze, bond and HC Primer without methyl methacrylate wetting provided statistically significantly lower bond strength than those of the MMA-wetted Poly(methyl methacrylate) (PMMA) surface. The highest shear bond strength was achieved with the application of Scothbond Universal Adhesive regardless of MMA wetting. The colors of resin composite - layered provisional Poly(methyl methacrylate) (PMMA) were different from the original resin composite color with ΔE results greater than the acceptable threshold (>3.7). Conclusion: Resin composites were able to effectively bond to the MMA-wetted Poly(methyl methacrylate) (PMMA) surface with the application of a tested bonding agent. Layering Poly(methyl methacrylate) (PMMA) with 0.5 mm-thick resin composite could not modify the Poly(methyl methacrylate) (PMMA) shade to the original resin composite color.

scholarly journals Investigation of the Secondary Ion Intensity from Poly(methyl methacrylate)(PMMA) Surface by TOF-SIMS.

Hyomen Kagaku ◽  
1998 ◽  
Vol 19 (7) ◽  
pp. 469-474 ◽  
Author(s):  
Yasuhiro NAGANUMA ◽  
Masayasu SOGA ◽  
Takahiro HOSHI ◽  
Kazunaka ENDO ◽  
Yuji ICHINOHE ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Poly Methyl Methacrylate ◽  
Tof Sims ◽  
Pmma Surface ◽  
Secondary Ion

scholarly journals One-step covalent hydrophobic/hydrophilic functionalization of chemically exfoliated molybdenum disulfide nanosheets with RAFT derived polymers

2021 ◽  
Author(s):  
Andriana Plantzopoulou ◽  
Anastasios Stergiou ◽  
Martha Kafetzi ◽  
Raul Arenal ◽  
Stergios Pispas ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Chemical Modification ◽  
Methyl Methacrylate ◽  
Molybdenum Disulfide ◽  
Single Step ◽  
Covalent Functionalization ◽  
Poly Methyl Methacrylate ◽  
One Step ◽  
Molybdenum Disulfide Nanosheets ◽  
Poly Acrylic Acid

Covalent functionalization of chemically exfoliated molydbenum disulfide (ce-MoS2) with hydrophobic poly(methyl methacrylate) and hydrophilic poly(acrylic acid) polymers, in a single-step without additives, is presented. The nature of chemical modification and...

Non-covalent functionalization of graphene oxide by pyrene-block copolymers for enhancing physical properties of poly(methyl methacrylate)

RSC Advances ◽  
2015 ◽  
Vol 5 (97) ◽  
pp. 79947-79955 ◽  
Author(s):  
Shiqiang Song ◽  
Chaoying Wan ◽  
Yong Zhang
Keyword(s):  
Graphene Oxide ◽  
Block Copolymers ◽  
Methyl Methacrylate ◽  
Physical Properties ◽  
Covalent Functionalization ◽  
Poly Methyl Methacrylate ◽  
Arget Atrp

Pyrene-functionalized poly(methyl methacrylate)-block-polydimethylsiloxane (Py-PMMA-b-PDMS) copolymers were synthesized via ARGET ATRP method and further used to functionalize GO through the π–π interaction between pyrene and the carbon sheets.

scholarly journals Effects of nystatin, fluconazole and propolis on poly(methyl methacrylate) resin surface

2008 ◽  
Vol 19 (3) ◽  
pp. 190-196 ◽  
Author(s):  
Wander José da Silva ◽  
Rodrigo Nunes Rached ◽  
Pedro Luis Rosalen ◽  
Altair Antoninha Del Bel Cury
Keyword(s):  
Free Energy ◽  
Methyl Methacrylate ◽  
Antifungal Agents ◽  
Knoop Hardness ◽  
Deionized Water ◽  
Control Groups ◽  
Denture Base ◽  
Poly Methyl Methacrylate ◽  
Acrylic Resins ◽  
Pmma Surface

The prevalence of candidosis in denture wearers is as well established as its treatment with antifungal agents (AAs). However, little research has been done regarding the effects of AAs on denture base surfaces. Therefore, the aim of this study was to evaluate the effects of fluconazole (FLU), nystatin (NYS) and propolis orabase gel (PRO) on poly (methyl-methacrylate) (PMMA) surfaces. Deionized water and orabase gel without any active component were used as control groups. Conventional heat-polymerized (Clássico) and microwave-polymerized (Onda Cryl) acrylic resins were used. After polymerization, the specimens were polished and had their surfaces evaluated for roughness, free energy and Knoop hardness. Subsequently, specimens were immersed in AAs and controls for 14 days at 35±2 °C and all variables were measured again. Data were analyzed statistically by 2-way ANOVA followed by Tukey's test ( α=0.05). Roughness results showed similar behavior for both PMMA resins, with PRO reaching the highest values and differing significantly from the other AAs (p<0.05). No statistically significant differences (p>0.05) were found between the two PMMA resins or between NYS and FLU as regards surface free energy. In conclusion, PRO was able to induce changes in PMMA surface properties, such as roughness, which could be related to microbial adhesion.

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