Dispersity - Wikipedia
网页The dispersity (Đ), also known as the polydispersity index (PDI) or heterogeneity index, is a measure of the distribution of molecular mass in a given polymer sample. Đ (PDI) of a polymer is calculated:
PDI（高分子科学用语）_百度百科
网页Polymer dispersity index (PDI)是聚合物分散性指数，用于描述 聚合物分子量分布。. 高分子的分子量通常不均一，本质上是 混合物，用平均分子量来描述高分子的分子量大小，平均分子量可分为数均分子量、重均分子量和粘均分子量，其中重均分子量和数均分子量之比 ...
Polydispersity – what does it mean for DLS and chromatography?
网页2017年10月23日 · Polydispersity or dispersity is a parameter that describes the non-uniformity of a distribution of molecular or particle sizes. Learn how to calculate and interpret polydispersity in dynamic light scattering (DLS) and gel permeation chromatography (GPC) or size exclusion chromatography (SEC).
核酸脂质纳米粒科普——粒径、PDI - 知乎 - 知乎专栏
网页2023年5月15日 · 同时，可以得到脂质纳米粒样本的平均粒径（Z-Average）、多分散系数（Polydispersity index，PDI or PI）。. PDI是反映粒径分布宽度的无量纲数值，范围为0~1之间，数值越小，代表粒度越均匀，粒度分布越集中。. 通过铭汰微流控纳米药物制备系统合成的脂质纳米粒 ...
多分散性 - 百度百科
网页多分散性（Polydispersity）：聚合物通常由一系列 相对分子量 不同的大分子同系物组成的混合物，用以表达聚合物的相对分子量大小并不相等的专业术语叫多分散性。
Polydispersity Index - an overview | ScienceDirect Topics
网页Polydispersity index (PDI) is a measure of the heterogeneity of a sample based on size or molecular weight distribution. Learn how PDI is calculated, used and affected by various factors in different fields of engineering, such as polymers, nanomaterials and emulsions.
Polydispersity - an overview | ScienceDirect Topics
网页Polydispersity is the variation in particle sizes within colloidal dispersions. It is important for data interpretation, magnetic properties, phase diagrams, and nanomedicine applications. See chapters and articles on polydispersity in chemistry and related fields.
Polydispersity - an overview | ScienceDirect Topics
网页Polydispersity is a measure of the heterogeneity of a sample based on size, such as particle size distribution in disperse systems or molecular weight distribution in polymers. Learn about the definition, methods, applications, and effects of polydispersity from various chapters and articles on ScienceDirect.
Tailoring polymer dispersity and shape of molecular weight ...
网页2019年10月10日 · Dispersity (Đ, formerly referred to as polydispersity index or PDI) is a measure of the width of a MWD and describes the heterogeneity (or uniformity) of the various chain molecular weights within a polymeric material.1 It can be calculated using the equation Đ = M w /M n, where M w is the weight average molecular weight (ΣN i M i …
Polydispersity Index: How Accurately Does It Measure the …
网页2005年1月19日 · It is well-known that both average molecular weight and molecular weight distribution are the two key characteristics that determine properties of polymers and that polydispersity index (PDI) is used as a measure of the breadth of the molecular weight distribution. PDI is defined as Mw/Mn where Mw and …