Q: List different types of polymerization techniques. Discuss
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Q: What type of column packing material is used where diethylamino ethyl sephadex belongs?
A: Sephadex is a cross-linked dextran gel used for gel filtration. It was launched by Pharmacia in…
Q: iscosity of a polymer decreases with increases in (a) shear strain rate, (b) molecular weight,…
A: Since you have posted multiple independent questions in the same request, we will solve the first…
Q: On which factors does removal efficiency of condensation depends?
A: Condensation is the process of water vapor turning back into liquid water, with the best example…
Q: 1. Poly (tetrafluoroethylene) (Teflon) will have a higher glass transition temperature, Tg than Poly…
A: A question about glass transition temperature, which is to be accomplished.
Q: Describe vacuum forming/thermoforming processes. What are typical thermoformed plastic products?
A: According to Q&A guidelines of Bartleby, we are supposed to answer only one question out of…
Q: polydimethylsiloxane
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Q: rubber has lower crosslinking density than general thermoset such as epoxy materials True or False
A: True
Q: An alternating copolymer of styrene and vinyl acetate can be turned into a graft copolymer by…
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Q: 14. Indicate two important microstructural characteristics for polymers that are considered for…
A: Polymeric fibers are derived from the polymers. Some of the examples of these fibres includes are…
Q: 1. What is the mass per repeating unit of PET (in g / mol)? Explain why this number should be used…
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Q: 12. Which is NOT TRUE about thermoplastic polymers? a. they maintain their shape and strength when…
A: Option (a) is correct choice... Thermoplastic polymers become soft on heating and reshaped...
Q: Which is NOT TRUE about thermoplastic polymers? a. they melt or deform on heating b. they cannot be…
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Q: Which of the method is relavent for both thermosetting and thermoplastic materials?
A: Thermosetting plastic is the one with a long molecule chain cross-linked together and having high…
Q: What is cross linking, give how does it effect recycling ability and strength of a polymer,
A: This is a question from polymer chemistry.
Q: Polymers prepared by condensation polymerization are usually of high molecular weights, but the…
A: Condensation Polymerization is an of Step growth polymerization, where smaller molecules are removed…
Q: LDPE or low-density polyethylene is one type of polymer resin that produces a plastic that is…
A: We have been asked to state the reason for the differences between LDPE and HDPE. The differences…
Q: Explain three characteristic features for Zieglar Natta polymerization in clear handwriting?
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Q: How are the physical properties of a polymer controlled in the vulcanization process?
A: Vulcanization or vulcanisation is a chemical process for converting natural rubber or related…
Q: Why are covalently bonded materials generally less dense than those that are bonded ionically or…
A: Since the case when the bonds are directional, that is they are present in a particular direction…
Q: Show the universal recycling codes to the learners. Or hang a poster of the codes in the classroom…
A: A question based on environmental chemistry that is to be accomplished.
Q: What are the ideal factors to consider for ranking these glove materials for toluene exposure
A: Glove selection chart provides advantage and disadvantages of a specific gloves to protect from the…
Q: region where necking occurs
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Q: Would you expect polyester to be stabilized by hydrogen bonding? Explain.
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Q: Differentiate between molecular structures and behaviours of thermoplastic and thermosetting…
A: When small molecules or units are combined together in large numbers then the substance formed is…
Q: What is the fraction of monomers (p) that have been used in a stepwise polymerisation reaction if…
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Q: name of an aplication in which polymer composite can not be use? and reason why we should not use…
A: Polymer composite is the polymers made up of a combination of organic polymers and their arrangement…
Q: Explain the Formation of an epoxy resin from a prepolymer and a hardening agent ?
A: Hardening reagent are amines. Prepolymers are obtained in alkaline medium.
Q: Draw the isotactic, syndiotactic, and atactic form of polypropylene in kekule structure.
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Q: Determine whether the first part of statement will INCREASE, DECREASE or HAVE NO EFFECT in the…
A: Since you have asked multiple question, we will solve the first question for you.If you want any…
Q: Which method of ionic polymerization—cationic or anionic—is preferred for attached monomer? Explain…
A: Generally cationic polymerization takes place only with alkene monomers that contain electron…
Q: How does a polypropylene face mask become polymeric carbon dots?
A: Answer - polypropylene face mask - These Disposable Face Masks are manufactured from polypropylene…
Q: Why doesn't the powder glass doesn't stick to the mould when making beads
A: Interpretation - To explain why powder glass doesn't stick to the mould when making beads.…
Q: A monomer is also considered to be a coextruded polymer True False
A: Coextrusion is a process in which two or more polymer materials are extruded together to produce…
Q: What effect does the presence of an α-Methyl group in a polymer chain have on the glass transition…
A: The effect of alpha Methyl group on the glass transition temperature (Tg) in a polymer chain is as…
Q: Polymer chains Monomer -A-B-8-A- 415 Press when
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Q: Which polymer is more apt to contain abnormal head-to-head linkages: poly(vinyl chloride) or…
A: Polystyrene is less apt to contain head to head linkages. It contains head to tail linkages. Poly…
Q: in cosmetics, why would a LDP Liquid Dispersible Polymer or pre-neutralized acrylate polymer be more…
A: Liquid dispersible polymer is also known as pre-neutralized acrylate polymer. Polymer powder in…
Q: Why is spandex both strong and flexible?
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Q: What is the most important property of elastomers?
A: Elastomers are defined as polymers that have viscoelasticity that means they exhibit viscosity as…
Q: Draw a short segment of each polymer: syndiotactic polyacrylonitrile
A: Syndiotactic polymers: The polymer structure containing the substituents present in the alternating…
Q: Poly(Vinyl Acetate) Briefly explain why Poly(Vinyl Acetate) is a synthetic polymer. Do not write…
A: Given explain why Poly(Vinyl Acetate) is a synthetic polymer
Q: Glass transition temperature is important for fabrication of polymers. Justify this statement. Draw…
A: The temperature at which the glassy state of polymer changes to viscous or rubbery state called as…
Q: Sketch and label the expected stress-strain curves at room temperature for lightly cross-linked…
A: Here is your answer... Step 1: Find the attachment
Q: difference
A: This question is related to proteins.
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- During the glass manufacturing process, the liquid must be cooled relatively quickly to form the glass. Why?The glass transition temperature Which of the following statements is true?< a. is constant for a particular polymer.< b. is the temperature above which the free volume is constant. C. is dependent on the type of secondary forces.<10a. Why each polymer gives a different melting temperature, Tm?
- To be a useful plastic, an amorphous polymer must be below its Tg at the ambient temperature, while crystalline polymers may be either above or below their Tg’s. Explain why.What is the function of solvents used in paint formulation? Write the solvents used in paints?PTFE polymer has a very high crystallinity among known commercial polymers. write down the reasons