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Non-Ionic Polyacrylamide (NPAM) is a linear homopolymer synthesized through the polymerization of acrylamide monomers, featuring an exceptionally low level of hydrolysis (typically less than 1%). With the molecular formula $[-\text{CH}_2-\text{CH}(\text{CONH}_2)-]_n$, its primary structural characteristic is the absence of charged ionic functional groups along the polymer backbone.
Unlike Anionic Polyacrylamide (APAM) or Cationic Polyacrylamide (CPAM), which rely heavily on electrostatic attraction to bind particles, NPAM functions primarily through **bridging flocculation** driven by hydrogen bonding. The highly polar amide groups ($-\text{CONH}_2$) exhibit a strong affinity for surface hydroxyls, silanol groups, and other hydrogen-receptive sites present on suspended particles. This makes NPAM remarkably stable in acidic, highly saline, or multi-ion wastewater contexts where charged polyelectrolytes would otherwise undergo chain collapse or neutralization.
NPAM performance is defined by precise polymerization properties tailored to extreme industrial requirements.
| Property Parameter | Standard Specification Range |
|---|---|
| Molecular Weight (MW) | 2.0 – 15.0 Million Daltons |
| Hydrolysis Degree | < 1.0% (Ultra-low charge density) |
| Solid Content | ≥ 88.0% – 92.0% (Powder Form) |
| Dissolving Time | ≤ 60 Minutes (at 25°C) |
| Insoluble Residuals | ≤ 0.2% |
Established in 2011, Smedic Technology Co., Ltd. is a comprehensive solution provider specialized in environmental protection agents, integrating R&D, production, sales, and engineering-related technical services. We are dedicated to providing customers with customized chemical products, technical solutions, and services.
Smedic produces environmental protection agents covering multiple sectors such as municipal sewage, industrial wastewater, and tap water treatment, as well as mineral processing agents, and oilfield chemicals. We offer more than 80 different environmental protection products, with an annual production capacity exceeding 1 million tons.
Our corporate headquarters is located in Beijing, with multiple wholly-owned production bases in Hebei, Guizhou, Shanxi, and other regions. We have established more than ten OEM partner factories and regional warehousing/logistics bases in Shandong, Shanxi, Anhui, Guangxi, and Sichuan provinces.
Our business and service network covers over 20 provinces across China. Our projects involve more than 600 urban sewage treatment plants and over 1,000 end customers in industrial wastewater treatment, mineral processing, and oilfield chemicals. The total sewage treatment capacity involved in the projects exceeds 20 million tons per day. We are a leading company in the Chinese market within the high-end segment of environmental protection chemicals.
Understanding regional compliance, performance requirements, and commercial drivers across world markets.
Global procurement offices require stringent compliance. Smedic ensures NPAM syntheses conform to REACH regulations for Europe, US EPA guidelines (TSCA), and regional water agency standards. Low residual monomer options (<500ppm to <200ppm free acrylamide) are available for applications involving potential environmental contact or drinking water processing.
For large-scale mineral processing and oil extraction, chemistry unit price is secondary to performance metrics like dosage-to-efficiency ratio. High molecular weight NPAM shortens dewatering cycles and minimizes sludge volume, leading to savings in disposal, logistics, and polymer dosing consumption.
To prevent moisture absorption and caking, our NPAM is packed in 25kg multi-wall paper bags with PE inner liners, or 750kg/1000kg bulk super-sacks. Strategic warehouses across major hubs enable reliable global logistics to North America, South America, Australia, South Africa, and the Middle East.
How Smedic's Non-Ionic Polyacrylamide addresses complex chemical challenges across global heavy industries.
In mineral dressing operations—such as coal washing, copper beneficiation, gold leaching, and iron ore processing—slurries often exhibit extreme pH levels and high electrolyte concentrations. Because NPAM is non-charged, it is unaffected by salt ions or pH swings. It binds via hydrogen bonding to silicates and oxides, accelerating sedimentation and filtration rates.
In oil and gas, NPAM serves as a mobility control agent, fluid loss additive, and friction reducer. Under high-salinity and high-temperature reservoir conditions, ionic polyacrylamides (APAM) can precipitate or shear-degrade. Smedic's NPAM maintains viscosity and shear resistance, optimizing oil displacement efficiency.
Wastewater from electroplating, steel pickling, and chemical synthesis often has low pH. Charged polymers can fail due to protonation. NPAM works well under acidic conditions, bridging inorganic metallic sludge particles effectively to produce clear effluent.
In paper mills, NPAM improves fiber retention and drainage rates, increasing dry strength without altering chemical balances. In textiles, it acts as a sizing agent, forming a protective film over yarns to enhance tensile strength and reduce breakage during weaving.
Technical Application Tip: When dissolving Non-Ionic Polyacrylamide, mechanical shear should be minimized. High-speed agitation can cleave the long polymer chains, reducing its bridging capability. We recommend using a paddle-type stirrer at 100-300 RPM for preparation.
Anticipating the next evolution of industrial water treatment and polymer synthesis.
Conventional high MW NPAM can take over 90 minutes to dissolve. Our current R&D focuses on micro-emulsion structures and porous particle designs that reduce dissolution times to under 30 minutes while maintaining molecular weights above 12 million.
For deep wells and extreme EOR, we are incorporating specialty monomers into the acrylamide backbone. These maintain chain stability at temperatures exceeding 120°C and high salinity (exceeding 200,000 mg/L TDS).
Smedic is exploring bio-based backbone materials, grafting polyacrylamide chains onto natural polysaccharides. This produces flocculants that retain synthetic polymer performance while improving environmental biodegradability.
We have obtained qualifications such as National High-tech Enterprise, National Specialized, Refined, Unique and Innovative "Little Giant" Enterprise, Hebei Province Green Factory, and China's Science and Technology-based Innovative Small and Medium-sized Enterprise.
We have a core technical team composed of academicians, experts, professors, and senior engineers. Our R&D system and technology commercialization platform centers around one academy, three research institutes, and five bases. We have established the Hebei Provincial Enterprise Technology Center, the Hebei Provincial Advanced Water Treatment Chemicals Technology Innovation Center, and the Cangzhou Water Treatment Engineering Technology Research Center, recognized as a Class A R&D institution in Hebei Province.
Additionally, we have established an expert workstation with the Tsinghua University Association of Senior Scientists and Technicians, set up joint R&D laboratories with Shandong University and Beijing University of Technology, and serve as a commercialization partner for Peking University and Tianjin University.
We have been granted over sixty Chinese patents, including more than forty invention patents and over twenty utility model patents. We have led the drafting of more than ten national and industry standards, including those for composite carbon sources, composite coagulants, sodium acetate, and nitrifying and denitrifying bacterial agents.
Our independently developed "Inorganic-Organic Covalent Bond Flocculant and Its Advanced Water Purification Technology" has won multiple awards, including the 22nd China Patent Award, the First Prize for Technological Invention from the China Petrochemical Industry Association, the Hebei Province Science and Technology Progress Award, and recognition as a Belt and Road SME Recommended Project.
Our "Active Oxygen Compound Disinfectant" has been recognized as a National Construction Industry Scientific and Technological Achievement Promotion Project by the Ministry of Housing and Urban-Rural Development.
We have been recognized as the "Leading Brand of Advanced Wastewater Treatment Chemicals" and the "Most Valuable Water Treatment Chemicals Brand" by China Water Network and the E20 Environmental Platform for four consecutive years.
We have established long-term strategic partnerships with dozens of major water groups, including Shouchuang Ecological and Environmental Group, Yangtze River Ecological and Environmental Group, Beijing Enterprises Water Group, OriginWater, and China Water Environment Group, and have been included in their centralized procurement supplier lists.
Smedic was founded, setting out to serve the municipal sewage treatment sector.
Established a complete product portfolio for municipal wastewater treatment chemicals.
Recognized as a key national high-tech enterprise.
Completed and established the production base for water treatment chemicals in Guiyang.
Expanded production bases in Hebei, Shandong, and Guizhou, exceeding 1 million tons in capacity.
Recognized as a National Specialized, Refined, Unique, and Innovative Small and Medium-sized Enterprise.
Established the provincial-level advanced water treatment chemical R&D platform in Hebei.
Recognized as a National Intellectual Property Advantage Enterprise.
Established a joint venture with the Chengdu Institute of Mineral Comprehensive Utilization, China Geological Survey, to produce mineral processing reagents.
Tailored molecular parameters, custom packaging, and comprehensive global regulatory support.
We configure molecular weight (MW from 2 to 15 Million), solubility profiles, and particle size distribution. Whether you require rapid dissolution times for compact mobile wastewater units or high shear resistance for deep-well EOR applications, we customize the polymer structure to match your operational targets.
With an annual capacity of over 1 million tons, our logistics bases in Shandong, Shanxi, Anhui, Guangxi, and Sichuan manage international container and bulk vessel shipments. We provide customizable labeling, palletized shrink-wrapped options, and comprehensive port clearance documentation.
Every shipment is accompanied by a Certificate of Analysis (COA), Technical Data Sheet (TDS), and safety data sheets compliant with the Globally Harmonized System (GHS/SDS). We support compliance requirements for major international markets, protecting industrial importers from customs delays.
Technical answers to common questions about Non-Ionic Polyacrylamide application, storage, and procurement.
Explore the second half of our environmental agent portfolio, engineered for foam control, metal extraction, scale prevention, and mining operations.
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