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749192

Sigma-Aldrich

Poly(styrene-block-methyl methacrylate)

average Mn 104,000, block ratio of 1:1

Synonym(s):

PS-block-PMMA, PS-PMMA

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About This Item

CAS Number:
25034-86-0
UNSPSC Code:
12162002

form

solid

mol wt

average Mn 104,000
average Mn 52,000 (PMMA)
average Mn 52,000 (polystyrene)

transition temp

Tm 345-350 °C

Mw/Mn

<1.2

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

InChI key

ADFPJHOAARPYLP-UHFFFAOYSA-N

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General description

57 kDa PS; 25 kDa PMMA; m ~494; n ~520
PS Mn = 57 ± 6 kg/mol
PMMA Mn = 25 ± 3 kg/mol
PDI of the overall block copolymer <1.2
PS molecular weight verified by SEC (taking an aliquot from the reaction mixture) and the PMMA molecular weight by NMR spectroscopy. The overall block copolymer molecular weight distribution would be determined by SEC.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H319

Precautionary Statements

P305 + P351 + P338

Hazard Classifications

Eye Irrit. 2

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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The Journal of bone and joint surgery. British volume, 88(1), 120-122 (2005-12-21)
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
M H Geiger et al.
Clinical orthopaedics and related research, (382)(382), 258-266 (2001-01-12)
This controlled study compared the strength and porosity of 48 polymethylmethacrylate cement-implant constructs prepared with open bowl versus vacuum mix technique. Forty-eight blast finished stainless steel rods of 13 mm diameter were implanted with centralizers into 17-mm inner diameter tubes
S J Breusch et al.
Acta orthopaedica Scandinavica, 72(1), 29-35 (2001-05-01)
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
Polymethylmethacrylate: from polymer to dialyzer.
H Sugaya et al.
Contributions to nephrology, 125, 1-8 (1999-01-23)
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