747009
Poly(styrene)-block-poly(acrylic acid)
PS:PAA 30,000:2,000, PDI ≤1.1
Synonym(s):
PS-PAA, PS-PAA amphiphilic diblock copolymer
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About This Item
Linear Formula:
C4H6N(C8H8)x(C3H4O2)yH
UNSPSC Code:
12352100
NACRES:
NA.23
Recommended Products
Quality Level
form
powder
mol wt
Mn 1,000-2,000 (poly(acrylic acid))
Mn 27,000-31,000 (polystyrene)
Mn 28,000-33,000 (total)
PDI
≤1.1
Related Categories
Application
Polystyrene-block-polyacrylic acid is a diblock copolymer used for making polymeric micelles/ vesicles (polymersomes) and other encapsulation applications, . This PS-block-PAA copolymer is 10 wt. % PAA; and should form micelles in water in the 100~200 nm range. The polystyrene degree of polymerization (DP) is 275 and the polyacrylic acid DP is 30.
Legal Information
Sold for research purposes only and subject to field restriction: see www.sigmaaldrich.com/raftlicense. Patents: 7,714,075; 7,250,479; 7,666,962; 6,642,318; 6,747,111; W2010/8356.
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
Target Organs
Respiratory system
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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Kaoutar Moumile et al.
Journal of clinical microbiology, 42(2), 923-924 (2004-02-10)
We describe a case of primary purulent culture-negative pericarditis caused by Neisseria meningitidis serogroup C occurring in an 8-month-old previously healthy boy, which was detected in pericardial fluid by broad-spectrum PCR amplification.
Dennis E Discher et al.
Science (New York, N.Y.), 297(5583), 967-973 (2002-08-10)
Vesicles are microscopic sacs that enclose a volume with a molecularly thin membrane. The membranes are generally self-directed assemblies of amphiphilic molecules with a dual hydrophilic-hydrophobic character. Biological amphiphiles form vesicles central to cell function and are principally lipids of
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