Structure of PP nanocomposites with edge-silated layered silicates

Sharad Kumar, K. Jayaraman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This study investigates effects of modifying the edges of organophilic layered silicates on the extent of exfoliation and micro structure in melt processed polypropylene nanocomposites. Montmorillonite with C-18 quaternary onium ions exchanged into the galleries was treated additionally with phenyl-trimethoxy silane and X-ray diffraction patterns on the silated clay confirmed that the silane was located at the clay edges. 5 wt% of this clay was compounded with 10 wt% maleated polypropylene PP-g-MA (acid number =23 and M w=22000) and with 85 wt% bulk PP. The organoclay with silane coupling at the edges led to higher exfoliation levels as compared to the unsilated organoclay. The nanocomposite specimens were extruded through a straight die as well as a converging profile die; with the latter die, extensional flow at uniform rates was obtained to a logarithmic tensile strain of 5. The extruded strands were evaluated by X-ray diffraction and transmission electron microscopy. Re-aggregation of the clay platelets was found to different extents in the extruded strands. The re-aggregation levels were reduced for the nanocomposites with the edge-functionalized clay particularly at higher residence times.

LanguageEnglish (US)
Title of host publicationSPE Automotive TPO Global Conference 2004 - Papers
Pages179-195
Number of pages17
StatePublished - 2004
EventSPE Automotive TPO Global Conference 2004 - Papers - Dearborn, MI, United States
Duration: Oct 3 2004Oct 6 2004

Other

OtherSPE Automotive TPO Global Conference 2004 - Papers
CountryUnited States
CityDearborn, MI
Period10/3/0410/6/04

Profile

Silicates
Nanocomposites
Clay
Silanes
Organoclay
Polypropylenes
Agglomeration
X ray diffraction
Tensile strain
Platelets
Clay minerals
Diffraction patterns
Transmission electron microscopy
Microstructure
Acids
Ions

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Kumar, S., & Jayaraman, K. (2004). Structure of PP nanocomposites with edge-silated layered silicates. In SPE Automotive TPO Global Conference 2004 - Papers (pp. 179-195)

Structure of PP nanocomposites with edge-silated layered silicates. / Kumar, Sharad; Jayaraman, K.

SPE Automotive TPO Global Conference 2004 - Papers. 2004. p. 179-195.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kumar, S & Jayaraman, K 2004, Structure of PP nanocomposites with edge-silated layered silicates. in SPE Automotive TPO Global Conference 2004 - Papers. pp. 179-195, SPE Automotive TPO Global Conference 2004 - Papers, Dearborn, MI, United States, 10/3/04.
Kumar S, Jayaraman K. Structure of PP nanocomposites with edge-silated layered silicates. In SPE Automotive TPO Global Conference 2004 - Papers. 2004. p. 179-195.
Kumar, Sharad ; Jayaraman, K./ Structure of PP nanocomposites with edge-silated layered silicates. SPE Automotive TPO Global Conference 2004 - Papers. 2004. pp. 179-195
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