Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Soft segments

Hard Segment Soft or Elastomeric Segment General Type(s)... [Pg.219]

Soft segment Hard segment Soft segment... [Pg.30]

Preliminary studies of the interphase between respective domains by Van Bogart et al. (53) indicate the thickness of this region, assuming a linear density gradient, is on the order of 10-20 A for polyester and polyether urethanes (MDI-BD based). Theoretically, the interfacial thickness is inversely related to the square root of the hard segment-soft segment interaction parameter (54). [Pg.17]

Absorption Ratio Hard segment Soft segment Substrate Side... [Pg.83]

Phase (Hard Segment, Soft Segment) Segregation... [Pg.95]

Soft polyol segment—Hard PUR segment—Soft polyol segment... [Pg.201]

Example 5.6 The tendency for hard segment-soft segment phase separation in urethane copolymers increases in the order polybutadiene and/or polyisoprene soft segment polyether soft segment > polyester soft segment. Explain. [Pg.154]

Cut teflon intravenous catheter 14-gauge into 1-cm segments (soft tissue model), polyethylene catheter PE 50 into 6-mm segments (Un) and sterilize each piece with 70% ethanol. Air-dry catheters overnight. [Pg.229]

HER Materials Analysis Hard Segment (%) Soft Segment (%)... [Pg.379]

Figure 1.2 Thermoplastic elastomers. hard segments, — soft segments. Figure 1.2 Thermoplastic elastomers. hard segments, — soft segments.
Hard segment Soft segment (SS) % SS Switching temperature °C Recovery (%) Reference... [Pg.114]

In the book, a study was made of how aspects of the constitutive responses of polyurethane elastomers vary with composition the polyaddition procedure, the hard segment, soft segment and chain extender (mostly diols) were varied systematically in a large number of systems of model and novel materials. Results were related to ... [Pg.268]

Soft segments Hard segments Soft segments Hard segments ... [Pg.25]

See other pages where Soft segments is mentioned: [Pg.302]    [Pg.76]    [Pg.101]    [Pg.302]    [Pg.416]    [Pg.21]    [Pg.79]    [Pg.98]    [Pg.99]    [Pg.192]    [Pg.155]    [Pg.127]    [Pg.313]    [Pg.10]    [Pg.227]    [Pg.119]    [Pg.84]    [Pg.69]    [Pg.86]    [Pg.227]    [Pg.389]    [Pg.261]    [Pg.42]    [Pg.279]    [Pg.555]    [Pg.385]   


SEARCH



© 2019 chempedia.info