Publication:
Aluminum- and calcium-incorporated MCM-41-type silica as supports for the immobilization of titanium(IV) isopropoxide in ring-opening polymerization of l-lactide and ε-caprolactone

Issued Date

2014-02-05

Resource Type

Article

ISSN

15667367

DOI

10.1016/j.catcom.2013.11.009

Other identifier(s)

2-s2.0-84888235030

Rights

Mahidol University

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SCOPUS

Bibliographic Citation

Catalysis Communications. Vol.45, (2014), 118-123

Suggested Citation

Nidwaree Wanna, Thanyalak Kraithong, Tossapol Khamnaen, Phairat Phiriyawirut, Sumate Charoenchaidet, Jonggol Tantirungrotechai Aluminum- and calcium-incorporated MCM-41-type silica as supports for the immobilization of titanium(IV) isopropoxide in ring-opening polymerization of l-lactide and ε-caprolactone. Catalysis Communications. Vol.45, (2014), 118-123. doi:10.1016/j.catcom.2013.11.009 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/33573

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Title

Aluminum- and calcium-incorporated MCM-41-type silica as supports for the immobilization of titanium(IV) isopropoxide in ring-opening polymerization of l-lactide and ε-caprolactone

Author(s)

Nidwaree Wanna
 Thanyalak Kraithong
 Tossapol Khamnaen
 Phairat Phiriyawirut
 Sumate Charoenchaidet
 Jonggol Tantirungrotechai

Other Contributor(s)

Mahidol University
 LTD.

Abstract

Aluminum- and calcium-incorporated MCM-41-type silica with various Al/Si and Ca/Si ratios were evaluated as catalytic supports for ring-opening polymerization (ROP) of l-lactide and ε-caprolactone. The catalytic centers were generated by grafting titanium(IV) isopropoxide onto the support. All prepared heterogeneous catalysts better restrained the ROP of lactide than the homogeneous analog, titanium(IV) isopropoxide. Compared to siliceous MCM-41, the incorporation of aluminum or calcium in MCM-41 framework improved the molecular weight of the polymers although it lessened the polymerization rate. The more acidic Al-MCM-41 support appeared to be more favorable than the more basic Ca-MCM-41 support for the ROP reactions. © 2013 Elsevier B.V.

Keyword(s)

Chemical Engineering
 Chemistry

Availability

URI

https://repository.li.mahidol.ac.th/handle/20.500.14594/33573

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