NDLI: Reactive processing of a non-additivated isotactic polypropylene: mechanical and morphological properties on molten and solid states

Content Provider	Springer Nature Link
Author	Echeverrigaray, Sergio G. Cruz, Robinson C. D. Oliveira, Ricardo V. B.
Copyright Year	2012
Abstract	Isotactic polypropylene (iPP) is a thermoplastic with several desirable properties as it can be modified by additives and processing, making it one of the most versatile and popular polymers. In this context, we present a detailed study of morphological and mechanical properties of non-additivated iPP produced by reactive processing, mainly concerning the effect of controlled radicalar degradation on polymer structure in molten and solid states. Melt rheology and size exclusion chromatography analyses evidenced the reduction on viscosity and moduli in dependence of molecular weight by the addition of commercial peroxide. The behavior in solid state showed that smaller chains of degraded iPP at high temperatures exhibited greater mobility resulting in a more viscous response upon a mechanical loading. Moreover, β-form crystals were suppressed by molecular weight reduction as suggested by X-ray diffraction. This finding suggests that smaller chains have higher mobility, and consequently are less susceptible to shear deformations during processing.
Starting Page	1237
Ending Page	1250
Page Count	14
File Format	PDF
ISSN	01700839
Journal	Polymer Bulletin
Volume Number	70
Issue Number	4
e-ISSN	14362449
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-09-20
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Reactive processing Polypropylene Dicumyl peroxide Rheometry Polymer Sciences Soft and Granular Matter, Complex Fluids and Microfluidics Characterization and Evaluation of Materials Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Condensed Matter Physics Polymers and Plastics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Properties of isotactic polypropylene/atactic polypropylene blends

Calcium pimelate supported on TiO2 nanoparticles as isotactic polypropylene prodegradant

The β-nucleating effect of wollastonite-filled isotactic polypropylene composites

Deformation behavior of isotactic polypropylene crystallized via a mesophase

High-pressure crystallization of isotactic polypropylene droplets

Surface crystallinity of meltspun isotactic polypropylene filaments

Control over crystalline form in polypropylene pipe via mandrel rotation extrusion

Thermal stability of isotactic polypropylene modified with calcium carbonate nanoparticles

In situ FT-IR spectroscopy study on the conformational changes of quenched isotactic polypropylene during stepwise heating

Reactive processing of a non-additivated isotactic polypropylene: mechanical and morphological properties on molten and solid states

Similar Documents

Properties of isotactic polypropylene/atactic polypropylene blends

Calcium pimelate supported on TiO2 nanoparticles as isotactic polypropylene prodegradant

The β-nucleating effect of wollastonite-filled isotactic polypropylene composites

Deformation behavior of isotactic polypropylene crystallized via a mesophase

High-pressure crystallization of isotactic polypropylene droplets

Surface crystallinity of meltspun isotactic polypropylene filaments

Control over crystalline form in polypropylene pipe via mandrel rotation extrusion

Thermal stability of isotactic polypropylene modified with calcium carbonate nanoparticles

In situ FT-IR spectroscopy study on the conformational changes of quenched isotactic polypropylene during stepwise heating

Reactive processing of a non-additivated isotactic polypropylene: mechanical and morphological properties on molten and solid states