746983

Poly(styrene)-block-poly(acrylic acid)

average M_n 38,000, 20 wt. % PAA, PDI ≤1.3

• Empirical Formula (Hill Notation): C₄H₆N(C₈H₈)_m(C₃H₄O₂)_nH
• UNSPSC Code: 12352100
• NACRES: NA.23

Properties

• form: powder
• mol wt: M_n 27,000-33,000 (polystyrene); M_n 34,000-42,000 (total); M_n 7,000-9,000 (poly(acrylic acid)); average M_n 38,000
• PDI: ≤1.3

Description

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 20 wt. % AA; and should form micelles in water in the 30~50 nm range. The polystyrene degree of polymerization (DP) is 275 and the polyacrylic acid DP is 120.

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.

Sold for research purposes only.  Not for use in humans.  Before opening or using this product, please read the following terms and conditions.  Use of this product shall constitute acknowledgement and acceptance of these terms and conditions.
Use of this product may be covered by one or more of the following US patents and corresponding claims outside the US: 7,714,075; 7,250,479; 7,666,962; 6,642,318; 6,747,111, and pending applications (W2010/8356).  For details contact Aldrich Chemical Company, Inc.

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H315,H319,H335
• Precautionary Statements: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• 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