Results 11 to 20 of about 8,492 (207)
Morphology and mechanical properties of poly(methylmethacrylate)-b-poly(alkylacrylate)-b-poly(methylmethacrylate) [PDF]
Polymer, 2001 Abstract A series of well-defined poly(methylmethacrylate) (PMMA)-b-poly(alkylacrylate)-b-PMMA triblock copolymers (MAM) has been synthesized by transalcoholysis of PMMA-b-poly(tert-butylacrylate)-b-PMMA precursors by alkyl alcohols. The molecular weight (MW) of the outer PMMA blocks is in the 10,000–50,000 range, compared to 50,000–200,000 for the ...
Tong, J.D. +5 more
openaire +4 more sources
Assessing the microstructure of simple rhamphothecae in chickens (Aves: Galliformes: Gallus gallus domesticus). [PDF]
J AnatSimple rhamphotheca are externally homogeneous but internally are composed of several corneous layers with varying hardness. Areas under more mechanical stress such as the rostral portion and the tomia are significantly harder than other areas. Abstract Corneous sheaths on the jaws of beaked tetrapods, or rhamphothecae, are classified as simple or ...
To KHT, Stocker MR, Hieronymus TL.
europepmc +2 more sources
Interpenetrating polymer networks based on natural rubber and poly(methylmethacrylate) [PDF]
, 2006 Several series of sequential interpenetrating polymer networks using natural rubber and poly(methylmethacrylate) were prepared. Three types of IPNs known as semi-1 IPNs, semi-2 IPNs and full IPNs have been prepared at various compositions.
Madhupani M. Jayasuriya (7125038)
core +6 more sources
An investigation into the mechanical and biological properties of acrylic bone cement containing triphenyl bismuth (TPB) as an alternative radiopacifier [PDF]
, 2003 PhDTotal joint replacement is the most successful method of treating end-stage arthritis. It significantly improves the quality of life and the functional capability of patients suffering from arthritis.
Abdulghani, Saba Fadhel
core +4 more sources
Journal of Functional Biomaterials, 2020 The insufficient radiopacity of dental adhesives applied under composite restorations makes the radiographic diagnosis of recurrent caries challenging. Consequently, the misdiagnosis may lead to unnecessary replacement of restorations.
Isadora Martini Garcia +6 more
doaj +1 more source
Applied Sciences, 2022 Temporary dental crowns and bridges are commonly made of poly-methylmethacrylate (PMMA), a porous material attracting the microbial biofilm associated with malodor production.
Ofir Rosner +7 more
doaj +1 more source
A Novel Polishing Paste (Mollusk Shells) for Poly (Methylmethacrylate)
International Journal of Dentistry, 2021 Objective. The aim of this study was to evaluate the effectiveness of a mollusk shells polishing paste (Donax obesulus) on the surface roughness of acrylic resin poly (methylmethacrylate) (PMMA). Methods. This study was an in vitro experimental design. A
Nicole Guerra +3 more
doaj +1 more source
Synthesis of Poly(N-vinyl-2-pyrrolidone-co-methyl methacrylate) by Maghnite-H+ a Non-toxic Catalyst
Bulletin of Chemical Reaction Engineering & Catalysis, 2014 In the present work poly (N-vinyl-2-pyrrolidone-co-methyl methacrylate) copolymers were prepared successfully and cleanly by a one step process via cationic copolymerization of N-vinyl-2-pyrrolidone (NVP) with methyl methacrylate (MMA), in heterogeneous ...
Mohamed Benadda +2 more
doaj +1 more source
Skin protection against methylmethacrylate [PDF]
Acta Orthopaedica Scandinavica, 1987 Ordinary surgical rubber gloves are penetrated by methylmethacrylate monomer (MMA) in less than 1 minute, as demonstrated by gas chromatographic measurements. A three-layered PVP glove, 0.07 mm thick--consisting of an outer layer of polyethylene, an intermediary layer of ethylene vinyl alcohol copolymer, and an inner layer of polyethylene--was ...
E, Darre, P, Vedel, J S, Jensen
openaire +2 more sources
Arquivos de Neuro-Psiquiatria, 2004 A prototipagem, método de reconstrução de segmentos do corpo humano através de programas de computação, tem sido usada na neurocirurgia para reproduzir o crânio de pacientes permitindo a programação de atos cirúrgicos e a produção de próteses para ...
Adriano Yacubian-Fernandes +4 more
doaj +1 more source