All

What are you looking for?

All
Projects
Results
Organizations

Quick search

  • Projects supported by TA ČR
  • Excellent projects
  • Projects with the highest public support
  • Current projects

Smart search

  • That is how I find a specific +word
  • That is how I leave the -word out of the results
  • “That is how I can find the whole phrase”

Evaluation of Branched Polypropylene Degradation by Using Different Constitutive Equations

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F16%3A43874785" target="_blank" >RIV/70883521:28110/16:43874785 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Evaluation of Branched Polypropylene Degradation by Using Different Constitutive Equations

  • Original language description

    In this work, virgin as well as thermally degraded branched polypropylenes were investigated by using rotational and Sentmanat extensional rheometers. Based on the shear and extensional rheology data it was deduced that both chain scission and chain branching takes place during thermal degradation of the tested polypropylene. It was found that simple constitutive equations such as Generalized Newtonian law, modified White-Metzner model and Yao model can be used to describe the measured steady state shear and uniaxial extensional viscosity data. It was revealed that Yao and Generalized Newtonian models have capability to quantify level of extensional strain hardening (i.e. the maximum steady state uniaxial extensional viscosity divided by 3 times Newtonian viscosity) as a function of degradation time via their parameters not only quantitatively but also qualitatively.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    JP - Industrial processes and processing

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA16-05886S" target="_blank" >GA16-05886S: Investigation the effect of polymer melt shear and elongational rheology on production stability of meltblown nanofibers and films</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Others

  • Publication year

    2016

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    Annual Technical Conference - ANTEC, Conference Proceedings

  • ISBN

    978-0-692-71961-9

  • ISSN

  • e-ISSN

  • Number of pages

    5

  • Pages from-to

    118-122

  • Publisher name

    Society of Plastic Engineers

  • Place of publication

    Indianapolis, Indiana, USA

  • Event location

    Indianapolis

  • Event date

    May 23, 2016

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article