Interpenetrating Polymer Networks and Related MaterialsTo the surprise of practically no one, research and engineering on multi polymer materials has steadily increased through the 1960s and 1970s. More and more people are remarking that we are running out of new monomers to polymerize, and that the improved polymers of the future will depend heavily on synergistic combinations of existing materials. In the era of the mid-1960s, three distinct multipolymer combinations were recognized: polymer blends, grafts, and blocks. Although inter penetrating polymer networks, lPNs, were prepared very early in polymer history, and already named by Millar in 1960, they played a relatively low-key role in polymer research developments until the late 1960s and 1970s. I would prefer to consider the IPNs as a subdivision of the graft copolymers. Yet the unique topology of the IPNs imparts properties not easily obtainable without the presence of crosslinking. One of the objectives of this book is to point out the wealth of work done on IPNs or closely related materials. Since many papers and patents actually concerned with IPNs are not so designated, this literature is significantly larger than first imagined. It may also be that many authors will meet each other for the first time on these pages and realize that they are working on a common topology. The number of applications suggested in the patent literature is large and growing. Included are impact-resistant plastics, ion exchange resins, noise-damping materials, a type of thermoplastic elastomer, and many more. |
From inside the book
Results 1-3 of 49
Page 52
... equation ( 4.3 ) into equation ( 4.2 ) , the contribution to the modulus by network I , E1 , becomes E1 = 3v1 / 3v1RT 1 ( 4.4 ) With dilution of network II by network I , the contribution to the modulus by network II may be written E2 ...
... equation ( 4.3 ) into equation ( 4.2 ) , the contribution to the modulus by network I , E1 , becomes E1 = 3v1 / 3v1RT 1 ( 4.4 ) With dilution of network II by network I , the contribution to the modulus by network II may be written E2 ...
Page 55
... equation ( 4.9 ) . The following equation differs from the original Thiele- Cohen derivation ( 17 ) by the insertion ( 21 ) of the term ( 1 / v ) 2 on the right - hand side of equation ( 4.22 ) : In ( 1 ā v1 ā v2 ) + V1 + V2 + Xs ( V1 ...
... equation ( 4.9 ) . The following equation differs from the original Thiele- Cohen derivation ( 17 ) by the insertion ( 21 ) of the term ( 1 / v ) 2 on the right - hand side of equation ( 4.22 ) : In ( 1 ā v1 ā v2 ) + V1 + V2 + Xs ( V1 ...
Page 162
... equation , assuming the poly- urethane as the continuous phase ; D1 and D2 the respective Dickie equations , M the 100 Mooney equation ; and B , the Budiansky equa- tion . ( 97 ) similar to the Davies equation [ equation ( 6.54 ) ...
... equation , assuming the poly- urethane as the continuous phase ; D1 and D2 the respective Dickie equations , M the 100 Mooney equation ; and B , the Budiansky equa- tion . ( 97 ) similar to the Davies equation [ equation ( 6.54 ) ...
Contents
An Introduction to Polymer Networks and IPNs | 1 |
Engineering Mechanical and General Behavior | 7 |
Phase Separation and Mechanical Behavior | 11 |
Copyright | |
12 other sections not shown
Other editions - View all
Common terms and phrases
ABCP acid acrylate Appl benzoyl peroxide block copolymers butadiene butyl castor oil chains Chem component composition crosslink density crosslink level crosslinked polymer cured D. A. Thomas diisocyanate elastomer emulsion epoxy equation equivalent weight Figure films gelation glass transition glycol graft copolymer homo-IPNs homopolymer Interpenetrating Networks Interpenetrating Polymer Networks IPNs isocyanate J. A. Manson K. C. Frisch Klempner L. H. Sperling L. M. Sergeeva latex latex IPNs Lipatov Macromolecules materials mechanical behavior methyl methacrylate mixing mixture modulus molding molecular molecule monomer morphology network II nomenclature Pā particles phase domain phase inversion phase separation physical crosslinks plastic Plenum PMMA poly poly(methyl methacrylate poly(vinyl polybutadiene polyester Polymer Blends polymerization polystyrene polyurethane potassium persulfate prepared prepolymer properties random copolymer reacted reaction resin rubber semi-I semi-IPNs semi-SIN sequential IPNs simultaneous SINS solution structure styrene swelling synthesis Table temperature tensile thermoplastic IPNs unsaturated urethane vā York