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MCP4716A0T-E/CH 其他数据使用手册 - Microchip(微芯)
制造商:
Microchip(微芯)
分类:
DA转换器
封装:
SOT-23-6
描述:
MICROCHIP MCP4716A0T-E/CH 数模转换器, AEC-Q100, 10 bit, 串行, SOT-23, 6 引脚
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MCP4716A0T-E/CH数据手册
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87
C H A P T E R 3
Conformation, Solutions, and Molecular Weight
Solvents are frequently used during the po-
lymerization process (Chapter 2), during fabrication (e.g., film casting, fiber formation, and
coatings), and for determining molecular weights and molecular-weight distributions. Interac-
tions between a polymer and solvent influence chain dimensions (i.e., conformations) and,
more importantly, determine solvent activities. The measurement of osmotic pressure and
scattered-light intensity from dilute polymer solutions—techniques based upon the principles
of polymer-solution thermodynamics—are the primary methods used to determine number-
average and weight-average molecular weights, respectively. Other solution-property tech-
niques, such as the determination of intrinsic viscosity and gel-permeation chromatography
(GPC), are widely used as rapid and convenient methods to determine polymer molecular
weights and, in the case of GPC, molecular-weight distributions as described in this chapter.
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