等级的上升
发表于 2025-3-28 15:08:48
Chromatographic Analysis of Polymers,e. Chromatography is based on two mutually immiscible phases, a . and a .. The mobile phase carries the sample through the system, and during its passage, different compounds are retained for different periods of time depending on their interactions with the stationary phase. The partition of compon
拱形大桥
发表于 2025-3-28 19:34:03
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BIDE
发表于 2025-3-29 01:14:22
Mechanical Properties,o stress or strain varies with time of loading, temperature and external environment to a greater extent compared to other materials, i.e. metals and ceramics. While metals at ambient conditions are elastic materials showing ., polymers are .. The term viscoelastic means that the material has both .
Mercantile
发表于 2025-3-29 06:21:05
Transport Properties of Polymers,ortant roles in a broad range of processes, including transport of species through cell membranes, migration from packaging, diffusion-limited oxidation, transport of water in plants and membrane separation. Polymers are generally poor electric and heat conductors but usually good ‘solute molecule c
在前面
发表于 2025-3-29 07:47:43
Processing of Polymeric Materials,arge extent is due to their thermal and rheological properties. Polymers in general have a low melting temperature, which for semicrystalline polymers is the crystal melting point (.) and for amorphous polymers is the glass transition temperature (.) (cf. Gedde and Hedenqvist 2019a, b). Thermoplasti