{"id":56512,"date":"2024-10-17T10:13:59","date_gmt":"2024-10-17T10:13:59","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-d2857-2001\/"},"modified":"2024-10-24T17:15:58","modified_gmt":"2024-10-24T17:15:58","slug":"astm-d2857-2001","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-d2857-2001\/","title":{"rendered":"ASTM-D2857 2001"},"content":{"rendered":"

ASTM D2857-95-Reapproved2001<\/h3>\n

Historical Standard: Standard Practice for Dilute Solution Viscosity of Polymers<\/h4>\n
\n

ASTM D2857<\/h4>\n

Scope<\/strong><\/p>\n

1.1 This practice covers the determination of the dilute solution viscosity of polymers. There are several ASTM standards (Test Methods D789, D1243, D1601, and D4603, and Practice D3591) that describe dilute solution viscosity procedures for specific polymers, such as nylon, poly(vinyl chloride), polyethylene, and poly(ethylene terephthalate). This practice is written to augment these standards when problems arise with which the specific procedure is not concerned, or when no standard is available for the polymer under investigation.<\/p>\n

1.2 This practice is applicable to all polymers that dissolve completely without chemical reaction or degradation to form solutions that are stable with time at a temperature between ambient and 150\u00b0C. Results are usually expressed as relative viscosity (viscosity ratio), inherent viscosity (logarithmic viscosity number), or intrinsic viscosity (limiting viscosity number) (see 3.1).<\/p>\n

1.3 For polyamides, relative viscosity values by this procedure are not equivalent to those determined by Test Methods D789.<\/p>\n

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.<\/i><\/p>\n

Note 1\u2014This standard and ISO 1628, “Plastics-Determination of Viscosity Number and Limiting Viscosity Number,” are technically equivalent.<\/p>\n

Keywords<\/strong><\/p>\n

flow and flow rate\u2014thermoplast; polymers\u2014molecular weight; viscosity\u2014dilute-solution; viscosity\u2014intrinsic; viscosity\u2014plast<\/p>\n

ICS Code<\/strong><\/p>\n

ICS Number Code 83.080.01 (Plast in general)<\/p>\n

DOI:<\/strong> 10.1520\/D2857-95R01<\/p>\n<\/div>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nScope
Referenced Documents
Terminology <\/td>\n<\/tr>\n
2<\/td>\nSummary of Practice
Significance and Use
Apparatus <\/td>\n<\/tr>\n
3<\/td>\nReagents and Materials
Sample Preparation
Procedure <\/td>\n<\/tr>\n
4<\/td>\nCalculation
Report
Precision and Bias
FIG. 1 <\/td>\n<\/tr>\n
5<\/td>\nKeywords
X1. RECOMMENDED SOLVENTS AND SOLUTION CONCENTRATIONS
X1.2 Polycarbonate
X1.3 Poly(Methyl Methacrylate)
X1.4 Poly(Vinyl Chloride) <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

D2857-95(2001) Standard Practice for Dilute Solution Viscosity of Polymers<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n2001<\/td>\n6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":56513,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1177,2637],"product_tag":[],"class_list":{"0":"post-56512","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-83-080-01","7":"product_cat-astm","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/56512","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/56513"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=56512"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=56512"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=56512"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}