Intrinsic Viscosity of Polyethylen Terephtalate (PET) | Starlinger viscotec

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Laboratory procedure for iV measurement of PET. The right procedure is crucial especially when testing iV of post-consumer bottle flakes to ensure precise and valuable results. viscotec offers basic and advanced training to our customers in order ensure precise measurement and quality control.

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31 июл 2024

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Комментарии : 17

@dmukherjee7956 9 лет назад

can we do this same test on nylon? also let me know how to find out the IV. value after running this experiment. I.V value would be on the screen or need to calculate from equation? please let me know Thanks

@delenor5682 11 лет назад

recycling auf höchstem niveau

@ifunanyaeze8685 2 года назад

good evening, Please note we are facing some IV variation on pet pellets. We took sample from cooler, that IV was 0.823, then after we took same sample from bag and kept in oven with 160 degree for 4 h and recheck its IV , which came 0.724. how is it possible?

@HangzhouZonwonTechnologyColtd 2 года назад

hi , this is Kent, we are the viscometer manufacturer, and I am very interested in your trouble. kindly share why put the PET in the oven at 160 degree? if the sample is suspected moisture content. then put the oven 105 degree, 2 hours.

@tiwianggraini4707 2 года назад

@@HangzhouZonwonTechnologyColtd Hi, should we use vacuum oven or only drying oven? I also want to know if it's possible to use resin that has been tested using moisture analyzer to tested using MFI tester? Thanks before

@biswajitsaha1174 5 лет назад

How to test discoloration of Pet Flakes?

@AliKlcTEMAG 4 года назад

Color b test

@AliKlcTEMAG 4 года назад

This is not IV measurement, but MFR... IV is completely different.

@johnbiagioni 3 года назад

The LMI contains a formula that determines IV from MFR

@ngohieu9839 2 года назад

@@johnbiagioni just for PET

@HangzhouZonwonTechnologyColtd 2 года назад

@@johnbiagioni Melt-Flow Index - Not always reliable MFI calibrated by IV Only reliable for pure polymers cannot be used for important Polymers e.g.PA (humidity) no direct correlation with molecular mass sensitive to any additives, fillers etc. good for production control

@johnbiagioni 2 года назад

I would disagree and know people that have correlated rPet IV between solution viscosity and a LMI/plastometer. If a LMI can correlate to the laboratory standard of solution viscosity results for recycled materials then I’d say it’s good enough for industry.

@johnbiagioni 2 года назад

And additional materials could be correlated if you took the time to characterize the materials between a LMI, LCR and solution viscosity. It comes down to accuracy, what’s “good enough” and what time you want to invest in your process.