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GB/T 36214.2-2018 English PDF

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US$224.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 36214.2-2018: Plastics -- Determination of average molecular mass and molecular mass distribution of polymers using size-exclusion chromatography -- Part 2: Universal calibration method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 36214.2-2018	224	Add to Cart	3 days	Plastics -- Determination of average molecular mass and molecular mass distribution of polymers using size-exclusion chromatography -- Part 2: Universal calibration method	Valid

Similar standards

GB/T 36805.2 GB/T 36374.2 GB/T 36374.1 GB/T 36214.4 GB/T 36214.5 GB/T 36214.3

Basic data

Standard ID: GB/T 36214.2-2018 (GB/T36214.2-2018)
Description (Translated English): Plastics -- Determination of average molecular mass and molecular mass distribution of polymers using size-exclusion chromatography -- Part 2: Universal calibration method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G31
Classification of International Standard: 83.080.20
Word Count Estimation: 12,113
Date of Issue: 2018-05-14
Date of Implementation: 2018-12-01
Regulation (derived from): National Standards Announcement No. 6 of 2018
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 36214.2-2018: Plastics -- Determination of average molecular mass and molecular mass distribution of polymers using size-exclusion chromatography -- Part 2: Universal calibration method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Plastics - Determination of the average molecular weight and molecular weight distribution of polymers by size exclusion chromatography - Part 2. Universal calibration method) ICS 83.080.20 G31 National Standards of People's Republic of China Determination of polymer by plastic volume exclusion chromatography Average molecular weight and molecular weight distribution Part 2. Universal Correction Part 2. Universalcalibrationmethod (ISO 16014-2.2012, IDT) Published on.2018-05-14 2018-12-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

GB/T 36214 "Plastics volume exclusion chromatography for the determination of the average molecular weight and molecular weight distribution of polymers" is divided into five parts. --- Part 1. General; --- Part 2. Universal Correction Method; --- Part 3. Low temperature method; --- Part 4. High temperature method; --- Part 5. Light scattering method. This part is the second part of GB/T 36214. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This section uses the translation method equivalent to ISO 16014-2.2012 "plastic volume exclusion chromatography to determine the average molecular weight of the polymer And molecular weight distribution Part 2. Universal Correction Act. This part was proposed by the China Petroleum and Chemical Industry Federation. This part is under the jurisdiction of the National Plastics Standardization Technical Committee (SAC/TC15). This section was drafted by. China National Petroleum Corporation Petrochemical Research Institute, Tongdao Technology Chengdu Co., Ltd., China Blue Star (Group) Co., Ltd., Beijing Puli Taike Instrument Co., Ltd., Guangzhou Quality Supervision and Inspection Institute. The main drafters of this section. Wang Li, Yi Jianjun, Peng Bin, Chen Hongyuan, Sun Lijun, Zu Fenghua, Zhang Lin, Tian Lijuan, Wang Wanjuan, Pan Yonghong, Luo Xiaoxia, Xu Jing, He Guoshan, Chen Minjian. Determination of polymer by plastic volume exclusion chromatography Average molecular weight and molecular weight distribution Part 2. Universal Correction

1 Scope

This part of GB/T 36214 specifies a method for determining the average molecular weight and molecular weight distribution of polymers by volume exclusion chromatography (SEC). Methods. The method uses a universal calibration curve instead of a conventional calibration curve to calculate the average molecular weight and molecular weight distribution. Note 1. The bibliography related to this section is listed in the bibliography. Note 2. The principle of the universal calibration method is based on the retention time of the polymer on the SEC depending on the molecular size of the polymer (fluidic volume) or the intrinsic viscosity The product of [η] and the molecular weight M. Experiments have demonstrated many random coil polymers (regardless of their chemical structure, degree of branching, composition or stereoregularity) Sex) conforms to this correspondence. The universal calibration curve is the use of polymer standards such as narrow molecular weight distribution polystyrene, eluted by lg([η]M) Inter-t or elution volume V is plotted. The molecular weight Mi of the unknown polymer sample can be corrected by the corresponding elution time on the universal calibration curve. [η]M value and intrinsic viscosity [η] or Mark-Houwink-Sakurada formula (η[ ] = KMα → η[ ]M = K and α in KMα 1 ) are calculated, where K is a constant and α is an index dependent on the experimental conditions. Therefore, this test method is as GB/T 36214.1 Described in this is a relative method in which the calculated average molecular weight and molecular weight distribution are equal to or close to their absolute values.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 36214.1-2018 Determination of the average molecular weight and molecular weight distribution of polymers by volume exclusion chromatography - Part 1. General Principles (ISO 16014-1.2012, IDT) GB/T 36214.3-2018 Determination of the average molecular weight and molecular weight distribution of polymers by volume exclusion chromatography - Part 3. Low temperature method (ISO 16014-3.2012, IDT) GB/T 36214.4-2018 Determination of the average molecular weight and molecular weight distribution of polymers by volume exclusion chromatography - Part 4. High temperature method (ISO 16014-4.2012, IDT) ISO 472 plastic terminology and its definition (Plastics-Vocabulary)

3 Terms and definitions

The terms and definitions defined in ISO 472 and GB/T 36214.1-2018 apply to this document. For the convenience of using this section, here again The definitions of the different average molecular weights are listed. The following formula defines four average molecular weights, Ni refers to the number of i-type molecules with a molecular weight of Mi, and α is Mark-Houwenke-Sakurada (Mark-Houwink-Sakurada) The index in the formula. Note. Although the formula is the same as in GB/T 36214.1, the Mi value in the following formula is calculated using the pervasive calibration curve described in Chapter 4. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 36214.2-2018_English be delivered?

Answer: Upon your order, we will start to translate GB/T 36214.2-2018_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 36214.2-2018_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 36214.2-2018_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.