Extensional flow of stiff-chain polymer solutions in the semidilute regime

被引:1
作者
Romo-Uribe, Angel [1 ]
机构
[1] Johnson & Johnson Vis Care Inc, Res & Dev Adv Sci & Technol Div, Jacksonville, FL 32256 USA
关键词
structure-property relationships; rheology; viscosity; viscoelasticity; FILAMENT-STRETCHING RHEOMETRY; VISCOSITY; DYNAMICS; ISOCYANATE); BEHAVIOR;
D O I
10.1002/app.51660
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Stiff-chain polymers are preponderant in biology as structural components of tissue and living cells. Hence, understanding their solution behavior under different flow histories is fundamental. Here, the extensional flow under capillary breakup of isotropic semidilute solutions of stiff-chain poly-n-butyl isocyanate (PBIC) and hydroxypropyl cellulose (HPC) has been studied. PBIC-chloroform and HPC-water were studied as the polymer-solvent interaction tunes the molecular conformation (Romo-Uribe, J. Appl. Polym. Sci. 2021, 138, e49712). PBIC in chloroform exhibits a rod-like conformation, and capillary breakup at constant concentration and temperature initially showed an exponential decay of filament diameter D(t) followed by a sudden decrease of D, and finally slow filament thinning. Increasing the molecular weight by threefold increased the breakup time tau(b) by twofold. HPC in water adopts a semiflexible conformation and the filament thinning also exhibited three stages, however the breakup time was shorter than PBIC. Hence, the extensional viscosity as a function of strain of PBIC and HPC solutions exhibited three regimes, where initial constant extensional viscosity eta(E) was followed by strain hardening and finally a sudden decrease of extensional viscosity as strain increased. It was found that the filament breakup time tau(b) is a function of the radius of gyration R-g.
引用
收藏
页数:8
相关论文
共 47 条
[1]   SOLUTION PROPERTIES OF POLY(N-BUTYL ISOCYANATE) .1. CHARACTERIZATION AND INTRINSIC-VISCOSITY BEHAVIOR OVER AN EXTENDED MOLECULAR-WEIGHT RANGE [J].
AMBLER, MR ;
MCINTYRE, D ;
FETTERS, LJ .
MACROMOLECULES, 1978, 11 (02) :300-306
[2]   Dynamic simulation of concentrated macromolecular solutions with screened long-range hydrodynamic interactions: Algorithm and limitations [J].
Ando, Tadashi ;
Chow, Edmond ;
Skolnick, Jeffrey .
JOURNAL OF CHEMICAL PHYSICS, 2013, 139 (12)
[3]   A bottom-up approach to cell mechanics [J].
Bausch, AR ;
Kroy, K .
NATURE PHYSICS, 2006, 2 (04) :231-238
[4]   Filament stretching and capillary breakup extensional rheometry measurements of viscoelastic wormlike micelle solutions [J].
Bhardwaj, Avinash ;
Miller, Erik ;
Rothstein, Jonathan P. .
JOURNAL OF RHEOLOGY, 2007, 51 (04) :693-719
[5]   Extensional Step Strain Rate Experiments on an Entangled Polymer Solution [J].
Bhattacharjee, P. K. ;
Nguyen, D. A. ;
Masubuchi, Y. ;
Sridhar, T. .
MACROMOLECULES, 2017, 50 (01) :386-395
[6]   Modeling semiflexible polymer networks [J].
Broedersz, C. P. ;
MacKintosh, F. C. .
REVIEWS OF MODERN PHYSICS, 2014, 86 (03) :995-1036
[7]  
DOI M, 1978, J CHEM SOC FARAD T 2, V74, P1789, DOI 10.1039/f29787401789
[8]  
Dontula P, 1997, RHEOL ACTA, V36, P429, DOI 10.1007/s003970050058
[9]   Internal dynamics of semiflexible polymers with active noise [J].
Eisenstecken, Thomas ;
Gompper, Gerhard ;
Winkler, Roland G. .
JOURNAL OF CHEMICAL PHYSICS, 2017, 146 (15)
[10]   Conformational Properties of Active Semiflexible Polymers [J].
Eisenstecken, Thomas ;
Gompper, Gerhard ;
Winkler, Roland G. .
POLYMERS, 2016, 8 (08)