Encapsulation of Peroxide Initiator in a Polyurea Shell: Its Characteristics and Effect on MMA Polymerization Kinetics

Hyeon Jin Kwon; Eun Ju Lee; Mi Rae Kim; Kang Ho Cheon; Hee Jung Park; Kee Yoon Lee

Macromolecular Research, Vol.27, No.2, 198-204, February, 2019

DOI10.1007/s13233-019-7094-4 Export Citation

Encapsulation of Peroxide Initiator in a Polyurea Shell: Its Characteristics and Effect on MMA Polymerization Kinetics

Hyeon Jin Kwon, Eun Ju Lee, Mi Rae Kim, Kang Ho Cheon, Hee Jung Park¹, and Kee Yoon Lee^†

Department of Polymer Science and Engineering, Chungnam National University, Daejeon 34134, Korea
¹Western Seoul Center Korea Basic Science Institute, Seoul 03759, Korea

E-mail:

Microcapsule with polyurea shell was prepared from oil-in-water (O/W) emulsion under various agitation speeds (230, 500, and 700 rpm) to encapsulate cumene hydroperoxide (CHP) and tert-butyl peroxy-2-ethyl hexanoate (TBPEH). Thus prepared microcapsule size and shell contents were observed to be decreased as the agitation speed increased. Differential scanning calorimetry (DSC) was used to measure and compare the effect on the reaction kinetics of the methyl methacrylate (MMA) radical polymerization in the presence of various initiators. When encapsulated initiator was used instead of unencapsulated initiator the maximum conversion and maximum reaction rate were decreased and the reaction temperature was delayed. The delay in reaction temperature was lager as the agitation speed decreased. In the case of encapsulated CHP at 230, 500, 700 rpm, the temperature at the maximum reaction rate was delayed by 5.8, 3.0, and 0.4 °C, respectively, compared to unencapsulated CHP.

Keywords:microcapsule;encapsulation;polyurea shell;initiator;agitation speed;reaction kinetics;etc

[References]

Behzadnasab M, Esfandeh M, Mirabedini SM, Zohuriaan-Mehr MJ, Colloids Surf. A: Physicochem. Eng. Asp., 457, 16 (2014)
Bansode SS, Banarjee SK, Gaikwad DD, Jadhav SL, Thorat RM, Int. J. Pharm. Sci. Rev. Res., 1, 38 (2010)
Blaiszik BJ, Caruso MM, McIlroy DA, Moore JS, White SR, Sottos NR, Polymer, 50(4), 990 (2009)
Green BK, Schleicher L, NCR Corp, US Patent 2800457 (1957).
Green BK, NCR Corp, US Patent 2800458 (1957).
Fergason JL, Manchester R & D Partnership, US Patent 4579423 (1986).
Cowsar DR, The United States of America as represented by the Secretary of the Army, US Patent 4201822 (1980).
Dubey R, Shami TC Rao UB, Def. Sci. J., 59, 82 (2009)
Safaei F, Khorasani SN, Rahnama H, Neisiany RE, Koochaki MS, Prog. Org. Coat., 114, 40 (2018)
Brown EN, Kessler MR, Sottos NR, White SR, J. Microencapsul., 20(6), 719 (2003)
Qiu XP, Leporatti S, Donath E, Mohwald H, Langmuir, 17(17), 5375 (2001)
Raeesi M, Mirabedini SM, Farnood RR, Appl. Mater. Interfaces., 9, 20818 (2017)
McFarland B, Popwell S, Pojman JA, Macromolecules, 39(1), 55 (2006)
Kim YA, Kim SH, Park JS, Lee DS, Kim JG, Shin JS, J. Adhes. Interface, 13, 17 (2012)
Aravand MA, Semsarzadeh MA, Macromol. Symp., 274, 141 (2008)
Di Somma I, Andreozzi R, Canterino M, Caprio V, Sanchirico R, AIChE J., 54(6), 1579 (2008)
Jiang S, Shi R, Cheng H, Zhang C, Zhao F, Green Energy Environ., 2, 370 (2017)
Awad WH, Wilkie CA, Polymer, 51(11), 2277 (2010)
Odian G, Principles of Polymerization, John Wiley & Sons, Inc., Hoboken, 2004.
Lee EJ, Park HJ, Kim SM, Lee KY, Macromol. Res., 26(4), 322 (2018)
Roberts DE, J. Res. Natl. Bur. Stand., 44, 221 (1950)

[1] Behzadnasab M, Esfandeh M, Mirabedini SM, Zohuriaan-Mehr MJ, Colloids Surf. A: Physicochem. Eng. Asp., 457, 16 (2014)

[2] Bansode SS, Banarjee SK, Gaikwad DD, Jadhav SL, Thorat RM, Int. J. Pharm. Sci. Rev. Res., 1, 38 (2010)

[3] Blaiszik BJ, Caruso MM, McIlroy DA, Moore JS, White SR, Sottos NR, Polymer, 50(4), 990 (2009)

[4] Green BK, Schleicher L, NCR Corp, US Patent 2800457 (1957).

[5] Green BK, NCR Corp, US Patent 2800458 (1957).

[6] Fergason JL, Manchester R & D Partnership, US Patent 4579423 (1986).

[7] Cowsar DR, The United States of America as represented by the Secretary of the Army, US Patent 4201822 (1980).

[8] Dubey R, Shami TC Rao UB, Def. Sci. J., 59, 82 (2009)

[9] Safaei F, Khorasani SN, Rahnama H, Neisiany RE, Koochaki MS, Prog. Org. Coat., 114, 40 (2018)

[10] Brown EN, Kessler MR, Sottos NR, White SR, J. Microencapsul., 20(6), 719 (2003)

[11] Qiu XP, Leporatti S, Donath E, Mohwald H, Langmuir, 17(17), 5375 (2001)

[12] Raeesi M, Mirabedini SM, Farnood RR, Appl. Mater. Interfaces., 9, 20818 (2017)

[13] McFarland B, Popwell S, Pojman JA, Macromolecules, 39(1), 55 (2006)

[14] Kim YA, Kim SH, Park JS, Lee DS, Kim JG, Shin JS, J. Adhes. Interface, 13, 17 (2012)

[15] Aravand MA, Semsarzadeh MA, Macromol. Symp., 274, 141 (2008)

[16] Di Somma I, Andreozzi R, Canterino M, Caprio V, Sanchirico R, AIChE J., 54(6), 1579 (2008)

[17] Jiang S, Shi R, Cheng H, Zhang C, Zhao F, Green Energy Environ., 2, 370 (2017)

[18] Awad WH, Wilkie CA, Polymer, 51(11), 2277 (2010)

[19] Odian G, Principles of Polymerization, John Wiley & Sons, Inc., Hoboken, 2004.

[20] Lee EJ, Park HJ, Kim SM, Lee KY, Macromol. Res., 26(4), 322 (2018)

[21] Roberts DE, J. Res. Natl. Bur. Stand., 44, 221 (1950)