739553
Poly(styrene-block-methyl methacrylate)
average Mn 32,000, block ratio of 2:1
Synonym(s):
PS-PMMA, block copolymer, Poly(b-methyl methacrylate-polystyrene), PS-block-PMMA, PS-PMMA
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About This Item
CAS Number:
UNSPSC Code:
12162002
InChI key
ADFPJHOAARPYLP-UHFFFAOYSA-N
InChI
1S/C8H8.C5H8O2/c1-2-8-6-4-3-5-7-8;1-4(2)5(6)7-3/h2-7H,1H2;1H2,2-3H3
form
solid
mol wt
average Mn 10,000 (PMMA), average Mn 22,000 (polystyrene), average Mn 32,000
transition temp
Tm 351-356 °C
Mw/Mn
<1.2
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General description
22 kDa PS; 10 kDa PMMA; m ~200; n ~100
signalword
Warning
hcodes
pcodes
Hazard Classifications
Eye Irrit. 2
Storage Class
13 - Non Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Regulatory Information
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The outcome of a cemented hip arthroplasty is partly dependent on the type of cement which is used. The production of an interface gap between the stem and the cement mantle as a result of shrinkage of the cement, may
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Clinical orthopaedics and related research, (382)(382), 258-266 (2001-01-12)
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N Greene et al.
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In vitro studies of antibiotic elution from polymethylmethacrylate cement comparing Simplex (Howmedica, Rutherford, NJ) with Palacos brands (Richards, Memphis, TN) have shown variable results. This study compares the elution of tobramycin and vancomycin from Simplex and Palacos beads and spacers.
S J Breusch et al.
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In a cadaver study, we prepared 29 paired human cadaver femora using 3 different broaches of identical geometry but different surface characteristics. In one group of 20 pairs, preparation with chipped-toothed broaches was compared to diamond-shaped broaches; in the other
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