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

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

doi:10.1016/j.catcom.2013.11.009

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

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

Department of Chemistry

Mahidol University
Siam Cement Group (SCG)

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

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.

Original language	English
Pages (from-to)	118-123
Number of pages	6
Journal	Catalysis Communications
Volume	45
DOIs	https://doi.org/10.1016/j.catcom.2013.11.009
Publication status	Published - 5 Feb 2014

Keywords

Lactide
MCM-41
Mesoporous silica
Ring-opening polymerization
Titanium alkoxide catalyst
ε-Caprolactone

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10.1016/j.catcom.2013.11.009

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Wanna, N., Kraithong, T., Khamnaen, T., Phiriyawirut, P., Charoenchaidet, S., & Tantirungrotechai, J. (2014). 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, 45, 118-123. https://doi.org/10.1016/j.catcom.2013.11.009

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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",

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.",

keywords = "Lactide, MCM-41, Mesoporous silica, Ring-opening polymerization, Titanium alkoxide catalyst, ε-Caprolactone",

author = "Nidwaree Wanna and Thanyalak Kraithong and Tossapol Khamnaen and Phairat Phiriyawirut and Sumate Charoenchaidet and Jonggol Tantirungrotechai",

year = "2014",

month = feb,

day = "5",

doi = "10.1016/j.catcom.2013.11.009",

language = "English",

volume = "45",

pages = "118--123",

journal = "Catalysis Communications",

issn = "1566-7367",

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Wanna, N, Kraithong, T, Khamnaen, T, Phiriyawirut, P, Charoenchaidet, S & Tantirungrotechai, J 2014, '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, pp. 118-123. https://doi.org/10.1016/j.catcom.2013.11.009

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. / Wanna, Nidwaree; Kraithong, Thanyalak; Khamnaen, Tossapol et al.
In: Catalysis Communications, Vol. 45, 05.02.2014, p. 118-123.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - 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

AU - Wanna, Nidwaree

AU - Kraithong, Thanyalak

AU - Khamnaen, Tossapol

AU - Phiriyawirut, Phairat

AU - Charoenchaidet, Sumate

AU - Tantirungrotechai, Jonggol

PY - 2014/2/5

Y1 - 2014/2/5

N2 - 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.

AB - 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.

KW - Lactide

KW - MCM-41

KW - Mesoporous silica

KW - Ring-opening polymerization

KW - Titanium alkoxide catalyst

KW - ε-Caprolactone

UR - https://www.scopus.com/pages/publications/84888235030

U2 - 10.1016/j.catcom.2013.11.009

DO - 10.1016/j.catcom.2013.11.009

M3 - Article

AN - SCOPUS:84888235030

SN - 1566-7367

VL - 45

SP - 118

EP - 123

JO - Catalysis Communications

JF - Catalysis Communications

ER -

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

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Keywords

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