Orientational Relaxation of Poly(propylene imine) Dendrimers at Different pH

2020 ◽  
Vol 124 (20) ◽  
pp. 4193-4202
Author(s):  
Shilpa Gupta ◽  
Parbati Biswas
Keyword(s):  
Orientational Relaxation ◽  
Poly Propylene

Molecular dynamics of poly(propylene) glycol in nanometer confinements

2000 ◽  
Vol 10 (PR7) ◽  
pp. Pr7-271-Pr7-274 ◽  
Author(s):  
A. Schönhals ◽  
H. Goering ◽  
K.-W. Brzezinka ◽  
Ch. Schick
Keyword(s):  
Molecular Dynamics ◽  
Propylene Glycol ◽  
Poly Propylene

Crystallization of Isotactic Poly(propylene) in Solution as Followed by Slow Calorimetry

1995 ◽  
Vol 60 (11) ◽  
pp. 1905-1924 ◽  
Author(s):  
Hong Phuong-Nguyen ◽  
Geneviève Delmas
Keyword(s):  
Molecular Weight ◽  
Crystal Growth ◽  
High Temperature ◽  
Heat Of Fusion ◽  
Complete Dissolution ◽  
Polymer Molecular Weight ◽  
Solvent Quality ◽  
Temperature Ramp ◽  
Poly Propylene

Dissolution, crystallization and second dissolution traces of isotactic poly(propylene) have been obtained in a slow temperature ramp (3 K h-1) with the C80 Setaram calorimeter. Traces of phase-change, in presence of solvent, are comparable to traces without solvent. The change of enthalpy on heating or cooling, ∆Htotal, over the 40-170 °C temperature range, is the sum of two contributions, ∆HDSC and ∆Hnetwork. The change ∆HDSC is the usual heat obtained in a fast temperature ramp and ∆Hnetwork is associated with a physical network whose disordering is slow and subject to superheating due to strain. When dissolution is complete, ∆Htotal is equal to ∆H0, the heat of fusion of perfect crystals. The values of ∆Htota for nascent and recrystallized samples are compared. Dissolution is the tool to evaluate the quality of the crystals. The repartition of ∆Htotal, into the two endotherms, reflects the quality of crystals. The crystals grown more rapidly have a higher fraction of network crystals which are stable at high T in the solvents. A complete dissolution, i.e. a high temperature (170 °C or more) is necessary to obtain good crystals. The effect of concentration, polymer molecular weight and solvent quality on crystal growth is analyzed.

A Model for the Elastoplastic Behavior of Isotactic Poly(propylene) Below the Yield Point

2003 ◽  
Vol 288 (2) ◽  
pp. 164-174 ◽  
Author(s):  
Aleksey D. Drozdov ◽  
Jesper deC. Christiansen
Keyword(s):  
Yield Point ◽  
Elastoplastic Behavior ◽  
Poly Propylene

Poly(propylene vanillate): A Sustainable Lignin-Based Semicrystalline Engineering Polyester

2021 ◽  
Vol 9 (3) ◽  
pp. 1383-1397
Author(s):  
Eleftheria Xanthopoulou ◽  
Zoi Terzopoulou ◽  
Alexandra Zamboulis ◽  
Lazaros Papadopoulos ◽  
Konstantinos Tsongas ◽  
...  
Keyword(s):  
Poly Propylene

scholarly journals Heterotelechelic poly(propylene oxide) as migration-inhibited toughening agent in hot lithography based additive manufacturing

2021 ◽  
Vol 12 (9) ◽  
pp. 1260-1272
Author(s):  
Daniel Grunenberg ◽  
Katharina Ehrmann ◽  
Christian Gorsche ◽  
Bernhard Steyrer ◽  
Thomas Koch ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Propylene Oxide ◽  
Chain Transfer ◽  
Poly Propylene ◽  
Toughening Agent

Linking an addition–fragmentation-chain-transfer (AFCT) functionality and methacrylate moiety via poly(propylene oxide)-oligomer within one molecule creates a non-migrating AFCT-reagent aiding network-homogeneity.

Reactivity of surface groups attached on a plasma treated poly(propylene) film. Application to a new concept of a chelating membrane

2000 ◽  
Vol 201 (2) ◽  
pp. 212-219 ◽  
Author(s):  
Fabienne Poncin-Epaillard ◽  
Nicolas Médard ◽  
Jean-Claude Soutif
Keyword(s):  
Surface Groups ◽  
Poly Propylene

A novel poly(propylene-co-imidazole) based biofuel cell: System optimization and operation for energy generation

2015 ◽  
Vol 47 ◽  
pp. 165-171 ◽  
Author(s):  
Muhammet Samet Kilic ◽  
Seyda Korkut ◽  
Baki Hazer
Keyword(s):  
Energy Generation ◽  
System Optimization ◽  
Cell System ◽  
Biofuel Cell ◽  
Poly Propylene
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