Polymer Chemistry

Hiemenz, Paul C.; Lodge, Timothy

doi:10.1201/9781420018271

Cited by 948 publications

(855 citation statements)

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“…The additive constant of 0.34 is commonly employed for polymer-solvent systems to produce more reliable v values. 26,27 d i is the solubility parameter of component i, which is estimated by the group contribution method proposed by van Krevelen. 28 The solubility parameters for the mixed solvents are determined by averaging the values of the individual components by volume.…”

Section: General Considerationsmentioning

confidence: 99%

Structure of poly(styrene‐b‐ethylene‐alt‐propylene) diblock copolymer micelles in binary solvent mixtures

Choi

Lee

Lodge

et al. 2015

J Polym Sci B Polym Phys

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The effect of solvent selectivity on the micelle structure formed by a poly(styrene‐b‐ethylene‐alt‐propylene) diblock copolymer (PS‐PEP, MPS = 42,000 g/mol and MPEP = 62,000 g/mol) in solutions of squalane, a highly selective solvent for the PEP block, and 1‐phenyldodecane, a neutral solvent, is investigated using dynamic light scattering (DLS) and small‐angle X‐ray scattering (SAXS). The results reveal that addition of 1‐phenyldodecane systematically reduces solvent selectivity, leading to decreases in the critical micelle temperature (TCMT) and the average number of chains in a micelle (Nagg), and an increase in the solvent fraction in the core. However, the core blocks have essentially unperturbed dimensions (i.e., Rc ≈ 2 × ⟨Rg⟩o, where ⟨Rg⟩o is unperturbed radius of gyration of the core block), and therefore the micelle core radius (Rc) is nearly independent of solvent selectivity, which has not been anticipated by previous theoretical descriptions. These results demonstrate that under such conditions, excluded volume effects in the corona blocks play the dominant role in determining micelle structure. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 22–31

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Section: General Considerationsmentioning

confidence: 99%

Structure of poly(styrene‐b‐ethylene‐alt‐propylene) diblock copolymer micelles in binary solvent mixtures

Choi

Lee

Lodge

et al. 2015

J Polym Sci B Polym Phys

Self Cite

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“…The system of non-linear ordinary differential Eqs. (8)(9)(10)(11) together with the boundary conditions (Eq. 12) are locally similar and solved numerically by using the shooting method.…”

Section: Resultsmentioning

confidence: 99%

“…The two-dimensional flow of a fluid near a stagnation point is a classical problem in fluid dynamics and its solution was first given by Hiemenz [9]. Using a similarity transformation, he demonstrated that the Navier-Stokes equations governing the flow can be reduced to a third-order ordinary differential equation.…”

Section: Introductionmentioning

confidence: 99%

Effect of a Magnetic Field on a Micropolar Fluid Flow in the Vicinity of an Axisymmetric Stagnation Point on a Circular Cylinder

Abdel-Rahman

2009

Chem Eng & Technol

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“…This gives the heating effect on the powder particles (the kinetic energy is instantly converted into thermal energy) that melt together in al ayer-by-layer fashion, creatingf ully dense metal parts that retain the characteristics of the material (Scheme 1f). [28] At the end of the process the unfusedp owder is removedw ith ab lower or by brushing. However,u sually the externals urfaces requiret ob es ubjectedt om achining or grinding processes.…”

Section: Electronicbeam Melting (Ebm)mentioning

confidence: 99%

Additive Manufacturing Technologies: 3D Printing in Organic Synthesis

2018

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The manufacturing of a three‐dimensional product from a computer‐driven digital model (3D printing) has found extensive applications in several fields. Additive manufacturing technologies offer the possibility to fabricate ad hoc tailored products on demand, at affordable prices, and have been employed to make customized and complex items for actual sale. However, despite the great progress and the countless opportunities offered by the 3D printing technology, surprisingly a relatively limited number of applications have been documented in organic chemistry. This Minireview will focus specifically on the exploitation of additive manufacturing technologies in the synthesis of organic compounds, and, in particular, on the use of 3D‐printed catalysts and 3D printed reactors, and on the fabrication and use of 3D printed flow reactors.

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Polymer Chemistry

Cited by 948 publications

References 0 publications

Structure of poly(styrene‐b‐ethylene‐alt‐propylene) diblock copolymer micelles in binary solvent mixtures

Structure of poly(styrene‐b‐ethylene‐alt‐propylene) diblock copolymer micelles in binary solvent mixtures

Effect of a Magnetic Field on a Micropolar Fluid Flow in the Vicinity of an Axisymmetric Stagnation Point on a Circular Cylinder

Additive Manufacturing Technologies: 3D Printing in Organic Synthesis

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