Microphase domains of poly(styrene-block-ethylene/butylene-block-styrene) triblock copolymers studied by atomic force microscopy

Influence of block molecular weight on the properties of styrene-ethylenebutylene-styrene block copolymers

“…These elevated regions or "plateaus" are the hard polystyrene phase, and the adjoining low lying areas or "plains," the soft poly(ethylene-butylene) phase. The situation is quite similar to the AFM images of some solution cast S-B-S and S-EB-S block copolymers studied by Annis et al19 and Motomatsu et al,12 respectively. It is also observed that the size of the elevated polystyrene domains increases marginally with an increase in polystyrene segment molecular weight.…”

“…6 Earlier, Kraus et al 9 reported the influence of block molecular weight on the steady flow and dynamic viscosities of S-B-S block copolymers only. Ohlsson et al 10,11 recently made some studies on solid S-EB-S/polypropylene/oil blends, and Motomatsu et al 12 observed the morphology of S-EB-S polymer by atomic force microscopy. Srinivasan and Gupta 13 studied the mechanical properties and morphology of polypropylene/S-EB-S/polycarbonate blends.…”

Evaluation of Drug Release Profile from Patches Based on Styrene–Isoprene–Styrene Block Copolymer: The Effect of Block Structure and Plasticizer

“…a-c DSC analysis of the drug, blank matrix, physical mixture of drug-matrix, and drug-loaded patches. All the matrices were prepared in the composition of SIS (D1163)/C5 resin/liquid paraffine at the ratio of 1:0.5:1 (w/w) with the drug concentration of 2 % surface tends to grow from long worm-like to mesh-like microphase domain (20). When the diblock content reaches 78 %, the soft isoprene spots are completely dispersed in the continuous phase composed of hard styrene network (Fig.…”

Design of nanocomposite polymer coatings for MEMS applications

“…polybutadiene or ethylene/butylenes copolymer). 37,38 These polymers, composed of thermoplastic and elastomeric blocks are called thermoplastic elastomers (TPE). In such materials, the mechanical performance of the reinforced rubber is combined with the straightforward processing of thermoplastics due to the physical network of flexible chains.…”

“…39 Van Dijk and van den Berg 40 relatively thick (>30 nm) films from block copolymers were obtained by spin-coating and solvent casting and their microdomain structure was studied. 41,42 Grafted polymer brush layer…”