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746991

Sigma-Aldrich

Polystyrene-block-poly(acrylic acid)

Synonym(s):

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

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About This Item

Empirical Formula (Hill Notation):
C4H6N(C8H8)m(C3H4O2)nH
UNSPSC Code:
12352100
NACRES:
NA.23

form

solid

Quality Level

100

mol wt

Mn 27,000-31,000 (polystyrene)
Mn 31,000-37,000 (total)
Mn 4,000-6,000 (poly(acrylic acid))

mp

258-263 °C

PDI

≤1.3

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Application

Polystyrene-block-polyacrylic acid is a diblock copolymer used for making polymeric vesicles (polymersomes) and other encapsulation applications.1-9 This PS-block-PAA copolymer is 15 wt. % AA; and should form vesicles in water in the 100 nm range. The polystyrene degree of polymerization (DP) is 275 and the polyacrylic acid DP is 50.

Legal Information

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.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

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)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Preparation of orthogonally-functionalized core Click cross-linked nanoparticles
Rachel K. O?Reilly,
New. J. Chem., 31, 718-724 (2007)
Qiang Tian et al.
Langmuir : the ACS journal of surfaces and colloids, 36(17), 4820-4826 (2020-04-11)
The interactions between natural colloidal organic matter and actinides in solutions are complex and not fully understood. In this work, a crew-cut polystyrene-b-poly(acry1ic acid) (PS-b-PAA) micelle is proposed as a model particle for humic acid (HA) colloid with the aim
Multiple Morphologies of PAA-b-PSt Assemblies throughout RAFT Dispersion Polymerization of Styrene with PAA Macro-CTA
Wei-Dong He,
Macromolecules, 44, 3358-3365 (2011)
Block Length Dependence of Morphological Phase Diagrams of theTernary System of PS-b-PAA/Dioxane/H2O
Hongwei Shen and Adi Eisenberg
Macromolecules, 33(7), 2561-2561 (2000)
Multiple Morphologies and Characteristics of ?Crew-Cut? Micelle-like Aggregates of Polystyrene-b-poly(acrylic acid) Diblock Copolymers in Aqueous Solutions
Lifeng Zhang and Adi Eisenberg
Journal of the American Chemical Society, 118, 3168-3181 (1996)
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