Abstract
Segmented polyetherurethanes with distinctively different morphologies, i.e., with chain-extended or chain-folded crystallized hard segments, could be created by small constitutional changes in the hard segment architecture. The different superstructure was achieved by building-in specially designed constitutional units in the middle of the otherwise regularly built hard segment which for flexibility or sterical reasons allowed an adjacent reentry chain-folded and/or chain-extended crystallization of the hard phase forming polyurethane segments. The material properties of the thermoplastic elastomers correlated systematically with the hard domain superstructure which was determined by the primary structure of the macromolecule and could be reversibly altered by the thermal history in the case of the flexible center unit. The softening temperature was determined by the hard domain height of the chain-folded lamellar or the chain-extended cylindrical domains; variation of the modulus in the elastomeric region could be related to imperfections in the hard segment packing which affected the effective hard domain filler.
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References
Oertel H (1965) Bayer Farben Revue 11:1; Chemiker Ztg 98:344 (1974)
Estes GM, Seymour RW, Copper SL (1971) Macromolecules 4:452
Eisenbach CD, Nefzger H (1989) in: Culbertson WM, “Multiphase Macromolecular Systems”, Contemporary Topics in Polymer Sci Vol 6, Plenum Publ Corp, New York p 339
Eisenbach CD, Hayen H, Nefzger H (1989) Makromol Chem Rapid Commun 10:463
Eisenbach CD, Heinemann T, Ribbe A, Stadler E (1993) Angew Chem 202/203:221
Eisenbach CD, Heinemann T, Ribbe A, Stadler E (1993) Polym Prep Am Chem Soc, Div Polym Chem 34(1):83
Eisenbach CD, Heinemann T, Ribbe A, Stadler E (1994) Macromol Symp 77:125
Eisenbach CD, Stadler E, Enkelmann V Macromol Chem Phys, in press
Eisenbach CD, Stadler E, Macromol Chem Phys (in press)
Harrell LL, Jr (1969) Macromolecules 2:607
Eisenbach CD, Nefzger H, Hayen H, Enkelmann V (1994) Macromol Chem Phys, 195:3325
Eisenbach CD, Ribbe A, Günter C (1994) Macromol Rapid Commun 15:395
Ng HN, Allegrezza AE, Seymour RW, Cooper SL (1973) Polymer 14:255
Miller JA, Lin SB, Hwang KS, Wu KS, Gibbson PE, Cooper SL (1985) Macromolecules 18:32
Christenson CP, Harthcock MA, Meadows MD, Spell HC, Howard WL, Creswich MW, Guerra RE, Turner RB (1986) J Polym Sci (Physics) 24:1401
Eisenbach CD, Baumgartner M, Günther In: C, Lal, Lal J, Mark JE (eds) Advances in Elastomers and Rubber Elasticity. Plenum Publ Corp, New York 1987 p 51
Kern W, Davidovits J, Rauterkus KJ, Schmidt GF (1961) Makromol Chem 43:106
Kornfield JA, Spiess HW, Nefzger H, Hayen H, Eisenbach CD (1991) Macromolecules 24:4787
Meltzer AD, Spiess HW, Eisenbach CD, Hayen H (1991) Macromol Chem Rapid Commun 12:261
Eisenbach CD, Hayen H, Popp G, (1994) Polym Prep Am Chem Soc, Div Polym Chem 35/1:583
Eisenbach CD, Stadler E, Colloid Polym Sci (to be submitted)
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Eisenbach, C.D., Stadler, E. Dynamic mechanical properties of poly-ether-urethane elastomers with chain-extended or chain-folded molecularly uniform poly (N-alkylurethane) hard segment domains. Colloid Polym Sci 273, 352–358 (1995). https://doi.org/10.1007/BF00652349
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DOI: https://doi.org/10.1007/BF00652349