Semibatch Aqueous-Solution Polymerization of Acrylic Acid: Simultaneous Control of Molar Masses and Reaction Temperature

Roque J. Minari; Gerardo Caceres; Paola Mandelli; Mariana M. Yossen; Manuel Gonzalez-Sierra; Jorge R. Vega; Luis M. Gugliotta

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Semibatch Aqueous-Solution Polymerization of Acrylic Acid: Simultaneous Control of Molar Masses and Reaction Temperature

机译：丙烯酸的半间歇水溶液聚合：摩尔质量和反应温度的同时控制

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The semibatch polymerization of non-ionized acrylic acid (AA) was investigated with the aim of producing poly(acrylic acid) (PAA) of controlled molar masses, at complete AA conversion, and under safe conditions. The proposed strategy mainly consists in feeding the AA at a constant rate along the reaction, for simultaneously controlling polymerization rate and molar masses. PAA of intermediate ~M_n, in the range 1 x 10~4-2 x 10~5 g • mol~(-1), was produced through an adequate selection of both the initiator concentration and the AA flow rate. In all experimental conditions, backbiting reactions were confirmed by 13C NMR. A simple mathematical model was developed to help interpret the experimental results.

机译：研究了非离子化丙烯酸（AA）的半间歇聚合，目的是在完全的AA转化率和安全条件下生产具有受控摩尔质量的聚丙烯酸（PAA）。所提出的策略主要在于沿着反应以恒定速率进料AA，以同时控制聚合速率和摩尔质量。通过适当选择引发剂浓度和AA流速，可制得中间体〜M_n的PAA，范围为1 x 10〜4-2 x 10〜5 g•mol〜（-1）。在所有实验条件下，通过13 C NMR证实了咬合反应。开发了一个简单的数学模型来帮助解释实验结果。

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《Macromolecular reaction engineering》 |2011年第6期|p.223-231|共9页
作者
Roque J. Minari; Gerardo Caceres; Paola Mandelli; Mariana M. Yossen; Manuel Gonzalez-Sierra; Jorge R. Vega; Luis M. Gugliotta;
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INTEC, Universidad Nacional del Litoral-CONICET, Guemes 3450,3000 Santa Fe, Argentina;

INTEC, Universidad Nacional del Litoral-CONICET, Guemes 3450,3000 Santa Fe, Argentina;

INTEC, Universidad Nacional del Litoral-CONICET, Guemes 3450,3000 Santa Fe, Argentina;

INTEC, Universidad Nacional del Litoral-CONICET, Guemes 3450,3000 Santa Fe, Argentina;

IQUIR, Universidad Nacional de Rosario-CONICET, Suipacha 531,2000 Rosario, Argentina;

Facultad Regional Santa Fe, Universidad Tecnologica Nacional,Lavaisse 610, 3000 Santa Fe, Argentina;

INTEC, Universidad Nacional del Litoral-CONICET, Guemes 3450,3000 Santa Fe, Argentina;

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2. Molar mass control of poly(N-isopropylacrylamide) and poly(acrylic acid) in aqueous polymerizations initiated by redox initiators based on persulfates [J] . Bokias G., Hourdet D., Durand A. Macromolecular chemistry and physics . 1998,第7期

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4. 8 Chitosan-Crosslinked Gels Prepared by a Simultaneously Occurring Reaction of Radiation-Induced Polymerization and Self-Bridging of Acrylic Acid in Aqueous solutions [C] . Amr Elhag Ali, Elsayed Ahmed Hegazy, John Hendri, Takasaki symposium on radiation processing of natural polymers . 2001

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5. Amino acids under hydrothermal conditions: Apparent molar volumes, apparent molar heat capacities, and acid /base dissociation constants for aqueous alpha-alanine, beta-alanine, glycine, and proline at temperatures from 25 to 250°C and pressures up to 30.0 MPa. [D] . Clarke, Rodney George Francis. 2000

机译：水热条件下的氨基酸：在25至250°C的温度和最高30.0 MPa的压力下，水性α-丙氨酸，β-丙氨酸，甘氨酸和脯氨酸的表观摩尔体积，表观摩尔热容量和酸/碱解离常数。
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7. Optimal Temperature Control of Semibatch Polymerization Reactors [O] . H. Hinsberger, S. Miesbach, H. J. Pesch 2007

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机译：受控活性聚合物：b-萘基丙烯酸酯，2-丙烯酰胺基（b-萘基）戊酸酯，3-丙烯酰胺基-3-甲基（b-萘基）丁酸酯和6-丙烯酰胺基（b-萘基） - 己酸酯的丙烯酸共聚物：释放行为

Semibatch Aqueous-Solution Polymerization of Acrylic Acid: Simultaneous Control of Molar Masses and Reaction Temperature

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