Abstract
Poly(t‐butyl methacrylate‐b‐isoprene‐b‐t‐butyl methacrylate) block copolymers have been synthesized in a controlled manner by anionic techniques. The block copolymers demonstrated predictable chemical composition and stereochemistry, and narrow molecular weight distributions. The addition of a polar solvent was required after complete conversion of the diene block in order to preserve the high 1,4 microstructure of the diene phase and to facilitate the efficient crossover to the poly(t‐butyl methacrylate) lithium enolate. Thermomechanical analysis (TMA) of the triblock copolymers demonstrated a microphase separated morphology. The glass transition temperatures of the diene phase and acrylic phase were approximately −70 and 120°C, respectively. Cast films of the block copolymers from polar and nonpolar solvents were optically clear and elastic.
| Original language | English |
|---|---|
| Pages (from-to) | 4001-4012 |
| Number of pages | 12 |
| Journal | Journal of Polymer Science Part A: Polymer Chemistry |
| Volume | 27 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 1989 Jan 1 |
| Externally published | Yes |
Fingerprint
ASJC Scopus subject areas
- Polymers and Plastics
- Organic Chemistry
- Materials Chemistry
Cite this
Synthesis and characterization of poly(t‐butyl methacrylate‐b‐isoprene‐b‐t‐butyl methacrylate) block copolymers by anionic techniques. / Long, T. E.; Broske, A. D.; Bradley, D. J.; McGrath, J. E.
In: Journal of Polymer Science Part A: Polymer Chemistry, Vol. 27, No. 12, 01.01.1989, p. 4001-4012.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis and characterization of poly(t‐butyl methacrylate‐b‐isoprene‐b‐t‐butyl methacrylate) block copolymers by anionic techniques
AU - Long, T. E.
AU - Broske, A. D.
AU - Bradley, D. J.
AU - McGrath, J. E.
PY - 1989/1/1
Y1 - 1989/1/1
N2 - Poly(t‐butyl methacrylate‐b‐isoprene‐b‐t‐butyl methacrylate) block copolymers have been synthesized in a controlled manner by anionic techniques. The block copolymers demonstrated predictable chemical composition and stereochemistry, and narrow molecular weight distributions. The addition of a polar solvent was required after complete conversion of the diene block in order to preserve the high 1,4 microstructure of the diene phase and to facilitate the efficient crossover to the poly(t‐butyl methacrylate) lithium enolate. Thermomechanical analysis (TMA) of the triblock copolymers demonstrated a microphase separated morphology. The glass transition temperatures of the diene phase and acrylic phase were approximately −70 and 120°C, respectively. Cast films of the block copolymers from polar and nonpolar solvents were optically clear and elastic.
AB - Poly(t‐butyl methacrylate‐b‐isoprene‐b‐t‐butyl methacrylate) block copolymers have been synthesized in a controlled manner by anionic techniques. The block copolymers demonstrated predictable chemical composition and stereochemistry, and narrow molecular weight distributions. The addition of a polar solvent was required after complete conversion of the diene block in order to preserve the high 1,4 microstructure of the diene phase and to facilitate the efficient crossover to the poly(t‐butyl methacrylate) lithium enolate. Thermomechanical analysis (TMA) of the triblock copolymers demonstrated a microphase separated morphology. The glass transition temperatures of the diene phase and acrylic phase were approximately −70 and 120°C, respectively. Cast films of the block copolymers from polar and nonpolar solvents were optically clear and elastic.
UR - http://www.scopus.com/inward/record.url?scp=0024770429&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0024770429&partnerID=8YFLogxK
U2 - 10.1002/pola.1989.080271211
DO - 10.1002/pola.1989.080271211
M3 - Article
AN - SCOPUS:0024770429
VL - 27
SP - 4001
EP - 4012
JO - Journal of Polymer Science, Part A: Polymer Chemistry
JF - Journal of Polymer Science, Part A: Polymer Chemistry
SN - 0887-624X
IS - 12
ER -