LASH
发表于 2025-3-28 14:53:41
Chemical Reactions of Macromolecules in the Solid State,cations. Chemical transformations of solid high polymers are very often a part of the synthesis of a polymer with desirable final properties. Such type of reactions can be illustrated for example by the second condensation step in the synthesis of ladder-type thermostable polymers, in which the fina
闲聊
发表于 2025-3-28 19:13:54
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止痛药
发表于 2025-3-29 00:34:32
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Fracture
发表于 2025-3-29 04:33:40
1389-2185 ndeed, its roots can ultimately be traced into anti quity, since, in commerce and daily life, man has always carried out reactions on polymers, e. g. in primitive dyeing and tanning operations. In more modern times Prof. Staudinger is commonly acknowledged as the investigator most responsible for t
歌剧等
发表于 2025-3-29 07:57:29
Polymers as Catalysts for Polymerization Reactions,n of N-carboxy-α-amino acid anhydrides (NCAs(I)).These monomers polymerize in the presence of bases with elimination of CO. and formation of poly α-amino acids; the reactions initiated by primary and secondary amines mainly follow the route shown in equation (1), although there are other processes occurring which need not concern us here.
哎呦
发表于 2025-3-29 13:09:30
Functionalization of Polymers,m, either in artificial or in biological systems. This definition is not absolute, since any chemical group may undergo chemical reactions. However, a polymer containing “reactive chemical groups” is usually prepared to be, and expected to act as a reactive substance and not merely as inert material.
Kindle
发表于 2025-3-29 19:32:08
Modification of Polymers Using Iodine Isocyanate. II. Improved Methods for Iodine Isocyanate Additiderivatives can be converted to methyl iodocarbamate or iodourea derivatives of polyisoprene by reaction with methanol or ammonia, respectively. The synthesis of a N′-(4-sulfonamidophenyl) iodourea derivative (a polyisoprene with pendant sulfanilamide groups) is described.
TAP
发表于 2025-3-29 20:28:56
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简略
发表于 2025-3-30 03:51:01
New Methods of Preparation of Tailor Made Polymer Networks,atories. However most of the experimental work was carried out on gels prepared either by polycondensation processes, or by radical copolymerization of two monomers one of which being bifunctional. The samples thus obtained are far from being structurally well defined for a number of reasons:
Tremor
发表于 2025-3-30 05:11:48
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