film thickness distribution. IUPAC has deprecated the use of the term polydispersity index, having replaced it with the term dispersity, represented by the...

number average molecular weight (Mn), the ratio of which is called the polydispersity index (ĐM). Mw and Mn can be measured by mass spectrometry. PEGylation...

special case of the gamma distribution. It is widely used to model the polydispersity of polymers. In this context it has been introduced in 1939 by Günter...

− 1 . {\displaystyle {\frac {W_{x}}{W_{o}}}=x(1-p)^{2}p^{x-1}.} The polydispersity index (PDI) is a measure of the distribution of molecular mass in a...

strength (MPa) 36 20 Elongation at tear (%) 565 635 Mooney viscosity, 100 °C 48.0 51.6 Glass transition temperature (°C) −65 −50 Polydispersity 2.1 4.5...

purity). The molecular weight distribution of the polymers is very low (polydispersity in the range of 1.05, the individual chains have thus very similar lengths)...

high-throughput formulation screening and improved control of particle size, polydispersity and reproducibility. In these methods, formulation composition, solvent...

so forms the end of a siloxane chain. Well-defined PDMS with a low polydispersity index and high homogeneity is produced by controlled anionic ring-opening...

Reiss, P.; Carayon, S.; Bleuse, J.; Pron, A. (9 October 2003). "Low polydispersity core/shell nanocrystals of CdSe/ZnSe and CdSe/ZnSe/ZnS type: preparation...

size-polydispersities of 2D ovals on the percolation threshold of crack networks in 3D space, see .The influence of shape and size polydispersities of pores...

{\displaystyle M_{n}<M_{v}<M_{w}<M_{z}.} The dispersity (also known as the polydispersity index) of a sample is defined as Mw divided by Mn and gives an indication...

can be used to determine the molar mass distribution. Polymers with polydispersity greater than 1.2 are difficult to characterize with MALDI due to the...

conventional stirring and results in higher molecular weights with lower polydispersities. Ormosils (organically modified silicate) are obtained when silane...

polymers with low molecular weights, and broad polydispersities. To obtain P3ATe with a narrow polydispersity, the authors investigated the optimal conditions...

catalysts useful in living polymerization, yielding polymers with low polydispersity. Grubbs catalysts are of interest for olefin metathesis. They are mainly...

and other dendrimers from traditional polymers, as it allows for low polydispersity and a high level of structural control during synthesis, and gives rise...

rate and μ2/Γ2 is the second order polydispersity index (or an indication of the variance). A third-order polydispersity index may also be derived but this...

Mingqi; Liu, Lin (July 2024). "Effects of grain's shape- and size-polydispersities, orientation, and area fraction on tortuosity and permeability of 2D...

A measure for the width of the molecular weight distribution is the polydispersity index. The targeted manipulation of the molecular weight distribution...

different factors including elevated pressure, temperature, solvent types, polydispersity, etc. The CPC model proved to be capable of modeling different systems...

improve purity. SEC can be used as a measure of both the size and the polydispersity of a synthesized polymer, that is, the ability to find the distribution...

inspection, a non-destructive testing method Diphenyleneiodonium (chemistry) Polydispersity index (PDI), now largely replaced by Dispersity (Đ) in current literature...

For particles larger than 30 nm, control of particle size with a low polydispersity of spherical gold nanoparticles remains challenging. In order to provide...

same mass. This phenomenon is called monodispersity in contrast to the polydispersity encountered in synthetic polymers. As a result, biopolymers have a dispersity...

adriamycin-resistant tumors. The particles had a hydrodynamic size of 37.66 ± 0.26 nm (polydispersity index = 0.06) and surface charge of −2.76 ± 1.83 mV. Altering the peripheral...

Jollès, P. (1980-05-29). "Proteoglycan complex and proteoglycan subunit polydispersity. Study by isopycnic centrifugation in cesium sulfate density gradients"...

conjugated polymers. Benefits to using CTP over other methods are low polydispersity and control over number average molecular weight in the resulting polymers...

involved during application/delivery of the vesicles; optimum size, polydispersity and shelf-life of the vesicles for the intended application; and, batch-to-batch...

different sizes. The notion of particle size distribution reflects this polydispersity. There is often a need for a certain average particle size for the ensemble...

interface, interface density per unit volume of nanocomposite, and polydispersity of nanoparticles significantly affect the effective thermal conductivity...

dispersibility index, in water Protein disulfide isomerase, an enzyme Polydispersity index, molecular weight distribution of polymers Pentamethylene diisocyanate...

least-squares regression curve. α: Relative standard deviation or degree of polydispersity. This value is also determined mathematically. For values less than...

of polypropylene, leading to reduced molecular weight and a narrower polydispersity index. 2003 – Arthur K. Doolittle Award, American Chemical Society 2008...

repeating monomer unit, Đ is the dispersity index. (formerly known as polydispersity index, symbol PDI) The last equation shows that the maximum value of...

autocorrelation function, average particle size can be calculated as well as a polydispersity index. For multi-exponential autocorrelation functions arising from...

linear polydichlorophosphazenes with defined molecular weights and polydispersities. The cyclic trimer (NPCl2)3 hexachlorocyclotriphosphane is predominantly...

developed by Tatemoto and coworkers in the 1970s gives relatively low polydispersities for fluoroolefin polymers. While it has received relatively little...

bonded interchain units. This means that a polymer sample with low polydispersity and long chain lengths (high molecular weights) will have fewer chain...

polymerization: 100 With TBD cat. 0.5% in benzene. 72% conversion in 8 hours. Polydispersity index: 1.16[citation needed] "SDS - 1,5,7-Triazabicyclo(4.4.0)dec-5-ene"...

polymer mixtures generally depend on polymer degree of polymerization and polydispersity. The seminal statistical mechanical model for the UCST of polymers is...

produced by chain-growth or step-growth polymerization and show thereby polydispersity, whereas biopolymers are synthesized by complex template-based mechanisms...

developed by Tatemoto and coworkers in the 1970s gives relatively low polydispersities for fluoroolefin polymers. While it has received relatively little...

"Polymer Analysis by NMR". Sigma Aldrich. Vieville; Tanty; Delsuc (2011). "Polydispersity index of polymers revealed by DOSY NMR". Journal of Magnetic Resonance...

polymerization produced very well-controlled particle sizes with low polydispersities. Janus interphase catalyst is a new generation of heterogeneous catalysts...

functional molecules changes its physicochemical properties, including hydrodynamic diameter (HD), polydispersity index (PDI) and Zeta potential (Zp)....

inhomogeneous distribution of their emission characteristics, due to polydispersity, although some works have explained it as a violation of Kasha's rule...

of light by a suspension of coated spherical particles: effects of polydispersity on cross sections, J. Phys. D: Appl. Phys. 30 (1997) 2123–2131. "||"...

doi:10.1002/macp.201500249. D. Freyss; P. Rempp; H. Benoît (1964). "Polydispersity of Anionically Prepared Block Copolymers". Journal of Polymer Science...

forces, molecular weight is lowered by particle size reduction and polydispersity is achieved. Multiphase systems are dispersed and emulsified very efficiently...

polymerization does not achieve controlled evolution of molecular weight and low polydispersity by reducing bi-radical termination events (although in some systems...

substitution, and the resulting star-shaped polymers thus have a rather narrow polydispersity index. In the core-first approach (also known as the "arm-out" or divergent...

non-linear shear and elongational behavior of polymer melts and effects of polydispersity, branching and blending on melt behavior. The outstanding point associated...

PMID 18689463. Hascall V, Sajdera S (10 October 1970). "Physical properties and polydispersity of proteoglycan from bovine nasal cartilage". The Journal of Biological...

growing polymer chains is determined by the initiator. To ensure a low polydispersity and a controlled polymerization, the rate of initiation must be as fast...

detection occurs on a particle by particle basis, the true average and polydispersity distribution can be determined. Using this principle, the world's only...

(> 25:1) nanorods with high yield (> 90%) at the cost of increased polydispersity. Another improvement is to introduce silver ions to the growth solution...

xanthan gum and orange oil affecting turbidity, average particle size, polydispersity index and density in orange beverage emulsion." Food Hydrocolloids 22...

Erdogan (September 1991). "Self-sharpening distributions revisited—polydispersity in growth by monomer addition". Journal of Colloid and Interface Science...

deliberately, which allows the control of molar weight and dispersity (or polydispersity index, PDI). Coordination polymerization is a chain polymerization that...

suppressed in most of the case and thus possible to realize a narrow polydispersity of the resulting supramolecular polymer. In 2007, Ian Manners and Mitchell...

total iron mass from Resovist contributes to the MPI signal due to its polydispersity, leading to relatively low MPI sensitivity. The signal intensity of...

cell cultures. These surface-level modifications also express a lower polydispersity index and can create stable colloids in biological liquid. Similarly...

 369–376 E. M. Bradbury, C. Crane-Robinson and P. G. Hartman Effect of Polydispersity on the nmr spectra of poly(gamma-benzyl-L-glutamate) through the helix...

behavior. Crosslinks and branching lead to higher molecular weight and polydispersity. Thus, these polymers will generally have increased stiffness, tensile...

were yellow with number average molar masses of 10 to 70 kg/mol and a polydispersity of 2 – 3. By variation of the catalyst concentration the molar masses...

acetate/P4-t-Bu initiator system, poly(methyl methacrylate) (PMMA) with narrow polydispersity and molar masses up to 40,000 g·mol−1 could be obtained in THF. Anionic...

molecular weight distribution of the polymer can be controlled and the polydispersity index can be narrowed. Jenkins, Aubrey D.; Jones, Richard G.; Moad,...

understanding the stability of these phases, attributing their formation to the polydispersity of domain sizes and the minimization of free energy associated with...

crystalline, isotactic polyhydroxybutyrates under inversion, whose low polydispersity Mw/Mn ≈ 1,2 indicate a living polymerization. Also strong bases such...

solutions, the LCST also depends on polymer degree of polymerization, polydispersity and branching as well as on the polymer's composition and architecture...

1209/0295-5075/5/5/006. Milner, S. T; Witten, T. A; Cates, M. E (1989). "Effects of polydispersity in the end-grafted polymer brush". Macromolecules. 22 (2): 853–861....

chlorinated product. Polymer with molar mass of 160,000 g/mole and polydispersity index 1.02 can be obtained. Vinyl ethers (CH2=CHOR, R = methyl, ethyl...

double belt. They can stabilise membrane proteins, but have higher polydispersity and are structurally less stable than MSP nanodiscs. Recent studies...

has important effects on the distribution of molecular weights, or polydispersity, in the finished polymer. Addition polymers are generally chemically...

concentration in an effort to control the molar mass, decrease the polydispersity index, and increase the polymer's purity. Among the catalysts used were...

nanoparticles, which influences their stability and dispersion. PDI: Polydispersity Index, a measure of the size distribution of nanoparticles. Hydrothermal...

(January 1997). "PHA synthase activity controls the molecular weight and polydispersity of polyhydroxybutyrate in vivo". Nature Biotechnology. 15 (1): 63–67...

because of high polydispersity, provided first experimental examples of coexistence of multiple phase domains due to polydispersity – Showed that such...

molecules at low ionic strengths. ELS has been used to characterize the polydispersity, nanodispersity, and stability of single-walled carbon nanotubes in...

in composition, modifications, molecular mass, viscoelasticity, and polydispersity. These unique qualities lead to a wide range of applications, including...

number-average molecular weight, weight-average molecular weight, and polydispersity. Some of the most common methods for determining these parameters are...

this approach. Furthermore, from a technical point of view, due to the polydispersity of these natural hydrogels, purification is a requisite but very difficult...

nuclear magnetic resonance (NMR). Generally the composition has a narrow polydispersity index (PDI) and the molecular weight increases with time as the polymer...

This method is, however, indirect and measurements can be perturbed by polydispersity in vesicle size. A more direct method of measuring Ka is the pipette...

(1997). "Instrumental effects in the analysis of polymers of wide polydispersity by MALDI mass spectrometry". International Journal of Mass Spectrometry...