Supercritical CO 2  as an exfoliating aid for nanocomposite preparation: Comparison of different processing methodologies | Zendy

Thompson M.R. | Zendy; Zhuang Z. | Zendy; Liu J. | Zendy; Rodgers W.R. | Zendy

Premium

Supercritical CO 2 as an exfoliating aid for nanocomposite preparation: Comparison of different processing methodologies

Author(s) -

Thompson M.R.,

Zhuang Z.,

Liu J.,

Rodgers W.R.

Publication year - 2012

Publication title -

polymer engineering and science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.503

H-Index - 111

eISSN - 1548-2634

pISSN - 0032-3888

DOI - 10.1002/pen.23156

Subject(s) - organoclay , polyolefin , materials science , nanocomposite , intercalation (chemistry) , compounding , composite material , supercritical fluid , chemical engineering , organic chemistry , chemistry , layer (electronics) , engineering

This article examines several new methods for compounding nanocomposite materials by twin screw extrusion that use supercritical CO 2 as a processing aid to produce more highly exfoliated polyolefin‐layered silicate nanocomposites than conventional melt intercalation. These methods varied the manner in which the plasticizing behavior of CO 2 influences the surfactant of an organoclay, the compatibilizer, and the matrix during preparation of a polyolefin nanocomposite. The results have shown that targeting CO 2 to the organoclay‐compatibilizer interface can improve the extent of intercalation. However, reduced performance was observed when CO 2 was introduced predominantly to the matrix or neat organoclay. In general, the different techniques of addition for CO 2 did bring about greater structural changes to the organoclay, but the stiffness of the resulting materials was lower than simply following a conventional melt intercalation approach. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research