Elsevier

Journal of Molecular Liquids

Volume 253, March 2018, Pages 305-313
Journal of Molecular Liquids

Prominent temperature-response and salt irritation from self-assemblies of polyzwitterion-sodium lauryl sulfonate

https://doi.org/10.1016/j.molliq.2018.01.059Get rights and content

Highlights

  • The self-assemblies possess low IFT, high conductivity and firmer network structure.

  • PABA-SLS system display high adsorption.

  • The self-assemblies show more powerful shear resistance.

  • PABA-SLS system display prominent temperature-responsive behavior.

  • The self-assemblies achieve salt irritation behavior.

Abstract

Herein, we reported three polyzwitterions: binary one (PAAS) synthesized with acrylamide (AM) and 2-((3-methacrylamidopropyl)dimethylammonio)ethyl sulfite (MAPES), and two ternary (PABA, PADA) with AM, MAPES and benzene sulfonamides. The polyzwitterions were successful synthesized and proved by FT-IR and 1H NMR. TGA analysis provided scientific result about thermal stability, and SEM images revealed bead model microstructure of self-assemblies which was composed of polyzwitterions and sodium lauryl sulfonate (SLS) of 0.5–3.0 g/L. Synergy of hydrogen bonding, hydrophobic association and electrostatic effect from self-assembly systems contributed to higher apparent viscosity (η), lower interfacial tension (IFT), electro-conductibility (σ) and greater peak height from 1H NMR. Exploration for adsorption of SLS by molecular structure and interaction further explained low IFT and electro-conductibility of self-assembly system through D-value of Cps and C[γs] as well as Cs and C[x]. Rheological property test including anti-shear, temperature tolerance, resistance to salt and viscoelasticity revealed that polyzwitterion-SLS 1.0 g/L was remarkable comparing with same series of self-assemblies. Moreover, PABA-SLS-1.0 g/L system demonstrated distinct temperature-responsive performance at 100 °C, 170 s−1 and salt irritation behavior for Na+, Ca2+, Mg2+.

Graphical abstract

Three polyzwitterions were successful synthesized. Distinct temperature-responsive performance and salt irritation behavior were achieved via the self-assembly of these polyzwitterions with sodium lauryl sulfonate.

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Introduction

As a special self-assembly system, polymer-surfactant has been widely investigated for various practical applications and scientific interest like pharmaceutical formulations, detergency, mineral separation as well as other industrial products [1,2]. Consequently, it is the conspicuous action between polymer and surfactant that generate significant sublimation of self-assembly system, including increase of viscosity, excellent rheological properties and reduction on surface tension. The performance improvement is due to surfactant micelles attaching to polymers through surfactant's critical aggregation concentration (CAC) which measures the strength of binding [3,4]. In addition, many modern experimental techniques are specially adopted to analyze specific interaction, like NMR spectroscopy, isothermal titration calorimetry, light scattering and steady state fluorescence quenching, which provides more scientific bases about annotation of microscopic mechanism [5]. In another way, from molecular level, interaction of self-assembly system is a cooperative nature of hydrophobic association force and ion-dipole interaction, which potentially leads to a number of diverse reasonable micro-models, such as beaded necklace model, cap model and enlacement model [[6], [7], [8]].

According to the formation mechanism of different models, it is believable to put forward that a binding process about surfactant onto polymer chain is replaced with the cooperative aggregation process. Since hydrophobic force is basically determined by entropic effects and enthalpy is the driving force, they play an important role on creating characteristics and structure of the self-assemblies. In addition, various parameters like system temperature, surfactant concentrations, molecular weight and concentration of polymer also affected the self-assemblies [9,10]. Moreover, the behavior of elf-assemblies may be widely changed via different variety of solvent medium, surfactants with anions and cations and the different length of hydrophobic tail and diverse polymers. The types of polymers included modified hydrophobic, block, naturally derived polymers, especially polyzwitterion because of attractive antipolyelectrolyte effect, remarkable chemical and thermal stability. The polyzwitterion were used in a broad field, like protein fouling including AgNp-PSBMAs and polyVBIPS [[11], [12], [13], [14]], and drug delivery systems including PCL-b-P(AEP-g-TMA/DMA), poly(sulfobetaine acrylamide), poly(MPDSAH), and SAM(PC-SAM) [[15], [16], [17], [18], [19], [20]]. It is almost known that head group sizes from the anionic and cationic surfactants and the role that water plays on the self-assemblies led to more strong affinity of anionic surfactant. Especially, the performance of polymer-sodium dodecyl sulfate (SDS) system was primarily determined by the common components from course of dissolution on macromolecules and aggregation about micelle formation of SDS in aqueous solution [[21], [22], [23]]. SDS tended to exhibit a highly cooperative manner while it interacted with myriad polymers in bulk solution, and had been studied by many scientific groups. However, it's urgent that function be confined between other functional group surfactants like sulfonate with polymers, especially polyzwitterion with hydrophobicity. Because hydrophobic zwitterionic polymers could faultlessly improve content of the alternative acting system and broaden the scope of industrialized application such as improvement about the oil recovery rate of binary composite flooding.

In terms of previous investigations, excellent performance of polyzwitterion and self-assembly system, the main purpose of our work is to evaluate the interaction between polyzwitterions and SLS through comparison of polyzwitterions and other surfactants including nonaphenol polyethyleneoxy (10) ether (OP-10), SDS, sodium dodecyl benzene sulfonate (SDBS), hexadecyl trimethyl ammonium bromide (CTMAB), tween 40 and 80. In addition, with a wide range of surfactant concentration (0.5–3.0 g/L), the self-assembly systems about shear (0–1000 s−1), temperature (25–100 °C) and salt (NaCl, CaCl2, MgCl2) resistance experiments were surveyed, and adsorption capacity was conducted via variety of surface tension and conductivity. At last, contrast between PAAS and PABA with SLS was performed with 1H-NMR in order to further confirm the dominance about synergy of hydrophobic association and electrostatic effect.

Section snippets

Materials

Dichloromethane(CH2Cl2), p-toluenesulfonyl chloride(TsCl), diallylamine(DAM), Acrylamide(AM), trimethylamine (Et3N) and 1,4-dioxane, OP-10, SLS, SDS, CTMAB, tween-40 and 80, (NH4)2S2O8, NaHSO3 and Na2SO4 were all chemically pure and from Chengdu Kelong Chemical Reagent Factory, Sichuan, China. Dodecyl benzene sulfonic acid (DB), N-(3-dimethylaminopropyl) methacrylamide (DAPMAA) was chemically pure and from Chengdu Huaxia Chemical Reagent Factory, Sichuan, China. Ethylene sulfite (ES) was

Analysis of IR spectrum

From Fig. 2, it was easily found that the remarkable absorption peak at 3433, 3429 and 3434 cm−1 correspond to N-H from –CONH2 and the eigen frequencies from 2971 to 2854 cm−1 were due to the characteristic peak of Csingle bondH being part of –CH3 and –CH2– groups. The peak of stretching vibration absorption at 1646 cm−1 was subordinate to Cdouble bondO from –CONH2 and always the group –OSO2 of MAPES was nearby at 1045 and 1395 cm−1. Comparing with the PAAS, PABA and PADA displayed two special absorption peaks from

Conclusion

With (NH4)2S2O8single bondNaHSO3 as initiator, we synthesized three zwitterionic polymers PAAS, PABA and PADA with monomers AM, MAPES DMBSA and DDBSA. The polymers were proved by FT-IR and 1H NMR. TGA analysis provided scientific result about thermal stability of polyzwitterions. Bead model microstructure of self-assemblies was confirmed by SEM. Synergy of hydrophobic association, hydrogen bond and electrostatic effect from self-assembly system promoted performance enhancements through variation of

Acknowledgements

This work is financially supported by Youth Science and Technology Innovation Team Special Programs of Sichuan Province (Grant NO. 2015TD0007), Support Program of Department of Science and Technology of Sichuan Province (Grant NO. 2016GZ0274) and Open Extracurricular Experiment of Southwest Petroleum University (Grant NO. KSP16087, 16088 and 16090).

References (48)

  • E. Guzmán et al.

    Adv. Colloid Interf. Sci.

    (2016)
  • H. Chang et al.

    J. Mol. Liq.

    (2017)
  • A. Rezaei et al.

    J. Mol. Liq.

    (2016)
  • M.S. Azizi et al.

    Eur. J. Org. Chem.

    (2016)
  • A.N. El-hoshoudy et al.

    Fuel

    (2016)
  • Y. Li et al.

    J. Colloid Interf. Sci.

    (2011)
  • L.B. Petrovic et al.

    J. Colloid Interf. Sci.

    (2010)
  • C. Yeon et al.

    Carbon

    (2015)
  • S.D. Wettig et al.

    J. Colloid Interf. Sci.

    (2001)
  • B.L. Peng et al.

    Colloids Surf. A Physicochem. Eng. Asp.

    (2013)
  • M. Hu et al.

    J. Membr. Sci.

    (2014)
  • J.H. Lin et al.

    J. Colloid Interf. Sci.

    (2016)
  • D.A. Karunakaran et al.

    J. Mol. Liq.

    (2016)
  • K.P. Guan et al.

    Adv. Mater.

    (2016)
  • W. Guan et al.

    J. Phys. Chem. C

    (2014)
  • G.K.S. Prameela et al.

    Phys. Chem. Chem. Phys.

    (2015)
  • K.C. Tam et al.

    Chem. Soc. Rev.

    (2006)
  • J. Philip et al.

    Macromolecules

    (2003)
  • E. Ruckenstein et al.

    Langmuir

    (1987)
  • J. Kim et al.

    Soft Matter

    (2013)
  • W. Ding et al.

    J. Polym. Sci. A Polym. Chem.

    (2015)
  • V.A. Vasantha et al.

    Langmuir

    (2015)
  • J.T. Yang et al.

    Langmuir

    (2015)
  • P. Köberle et al.

    Macromolecules

    (1994)
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