Timothy P. Lodge

Key takeaways

Timothy P. Lodge belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Timothy P. Lodge to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Timothy P. Lodge from memory before moving on to harder problems.

Reference excerpt

Timothy P. Lodge (born 11 April 1954) is an American polymer scientist. Lodge is a Regents Professor (2013–present), an Institute of Technology Distinguished Professor (2004–present), and a Distinguished McKnight University Professor (2001–present) in the Department of Chemistry and the Department of Chemical Engineering and Materials Science at the University of Minnesota, Twin Cities, Minneapolis-Saint Paul, Minnesota where he has been a faculty member since 1982. He served as the Editor-in-Chief of the American Chemical Society journal Macromolecules for 17 years (2001–2017) and as the founding editor of ACS Macro Letters (2011–2018). He is recognized for his research in polymer science, especially fundamental explorations of polymer chain dynamics in miscible blends, block polymers, multicompartment micelles and polymers in ionic liquids. According to Web of Science, he has produced 331 published works that have been cited over 12,400 times, with an h-index of 62 as of April 6, 2014. He is also co-author, with Paul Hiemenz, of the textbook, Polymer Chemistry, 2nd edition.

Background and personal life Timothy P. Lodge was born in Manchester, England, a son of Helen and Arthur S. Lodge. He moved permanently to the United States in 1968. He received his A. B. degree in applied mathematics from Harvard University in 1975. Working under the mentorship of Professor John Schrag at the University of Wisconsin, Madison, Lodge received his Ph.D. in chemistry in 1980. His dissertation was titled, "Oscillatory Flow Birefringence of Dilute Polymer Solutions: Concentration Dependence and High Frequency Behavior." Upon graduation, Lodge collaborated with Dr. Charles Han as a National Research Council Postdoctoral Associate at the National Bureau of Standards (now the National Institute of Standards and Technology). Lodge and his wife have two children.

Contributions to polymer science Lodge is internationally recognized for his seminal contributions in numerous areas of polymer science. The focus of his work has been on achieving a molecular-level understanding of polymer structure and dynamics in multicomponent systems and mixtures, and to understand how these are affected by the thermodynamic interactions amongst the components. Polymer chain dynamics: Lodge's early work focused on the chain dynamics of polymers in solution and in miscible blends. In particular, Lodge and McLeish (2000) discussed the effect of local composition on the dynamics of polymers in a miscible blend. Their model was based on two simple assumptions. First, that dynamic heterogeneity occurs over a length scale on the order of a Kuhn length of the chain. Second, that each polymer in the blend experiences a 'self-concentration' that is higher than the bulk (average) composition, due to chain connectivity over this length scale. The impact is that the local dynamics of the two polymers in the blend may exhibit different dependencies on temperature and overall composition due to differences in local composition. This leads to a breakdown in time-temperature superposition, and the appearance of two distinct glass transition temperatures in the mixture. Block copolymer solutions: Lodge's research group has maintained long-standing interest in the self-assembly of block copolymers in solutions. Studying the phase behavior of polystyrene-block-polyisoprene in solvents of varying selectivity, the concept of phase trajectories was introduced to explain the phase sequences observed as a function of concentration in neutral and selective solvents connecting the solution behavior to that seen in block copolymer melts. From this foundation, the thermodynamics and kinetics of polymorphic order-order transitions were investigated. One paper of note demonstrated the thermoreversible, epitaxial face-centered cubic to body-centered cubic transition in highly ordered, micellar block copolymer solutions and its similarity to transitions observed in atomic systems (e.g. metals and alloys) supporting the general nature of the occurrence of this phase transition in materials. Miktoarm Star Polymers: In 2004, Lodge published the seminal paper on the self-assembly of miktoarm star terpolymers in solution; a paper that has been cited over 600 times. Using ABC miktoarm star polymers the first example of multicomponent block copolymer micelles was shown, driven by the mutual incompatibility of the hydrophilic A and hydrophobic B and C blocks. In a subsequent paper the simultaneous, segregated storage of two different chromophores in the different micelle domains was demonstrated, offering potential for use in chemical delivery in fields such as pharmaceuticals, personal care products, and foodstuffs. Polymers in Ionic Liquids: Lodge's recent work has focused on the self-assembly of block copolymers in ionic liquids. Ionic liquids are considered by many to be "green" solvents due to their vanishing vapor pressure, fire resistance, as well as their excellent chemical and thermal stability over wide temperature ranges. Besides elucidating the assembly properties of block copolymers in ionic liquids, Lodge has used these materials to produce molecular shuttles, gas separation membranes, and ion gel gate dielectrics for use in polymer thin film transistors. Education in Polymer Science: Lodge is a co-author of Polymer Chemistry, 2nd Edition, written with Paul Hiemenz (2007). In 2012 he was elected to the University of Minnesota Academy of Distinguished Teachers, and he received the Postbaccalaureate, Graduate, and Professional Education Award. Lodge is the co-holder of four patents.

Awards, honors, and professional service For his research and education efforts, Lodge has received numerous awards including:

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Worked examples

Example 1 — a first encounter with Timothy P. Lodge

Start with the simplest possible case. Write down what Timothy P. Lodge claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Timothy P. Lodge before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Timothy P. Lodge ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Timothy P. Lodge

In research: Timothy P. Lodge appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Timothy P. Lodge in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Timothy P. Lodge is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1954 births, 21st-century American chemists, Fellows of the American Physical Society, so understanding it makes those chapters shorter.
In everyday life: Look for Timothy P. Lodge outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

How to study Timothy P. Lodge in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Timothy P. Lodge means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Timothy P. Lodge out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Timothy P. Lodge in simple terms?

Timothy P. Lodge (born 11 April 1954) is an American polymer scientist.

Why does Timothy P. Lodge matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Timothy P. Lodge?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Timothy P. Lodge.